CN102298931B - 用于在能量辅助磁记录磁头中提供热管理的方法和系统 - Google Patents

用于在能量辅助磁记录磁头中提供热管理的方法和系统 Download PDF

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CN102298931B
CN102298931B CN201110183014.8A CN201110183014A CN102298931B CN 102298931 B CN102298931 B CN 102298931B CN 201110183014 A CN201110183014 A CN 201110183014A CN 102298931 B CN102298931 B CN 102298931B
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eamr
substrate
contact element
laser instrument
magnetic head
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CN102298931A (zh
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L·王
S·李
W·严
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Western Digital Technologies Inc
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/10—Structure or manufacture of housings or shields for heads
    • G11B5/105—Mounting of head within housing or assembling of head and housing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/60—Fluid-dynamic spacing of heads from record-carriers
    • G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion
    • G11B5/6088—Optical waveguide in or on flying head
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G11B2005/0021—Thermally assisted recording using an auxiliary energy source for heating the recording layer locally to assist the magnetization reversal
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • G11B5/313—Disposition of layers
    • G11B5/3133—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure
    • G11B5/314—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure where the layers are extra layers normally not provided in the transducing structure, e.g. optical layers

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  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)

Abstract

本发明描述一种用于提供能量辅助磁记录(EAMR)磁头的方法和系统。该方法和系统包括提供基板、至少一个EAMR换能器、覆盖层和至少一个激光器。基板具有前缘和基板尾缘。EAMR换能器位于器件层中和在基板尾缘上。覆盖层包括多个接触件。器件层在覆盖层和基板尾缘之间。激光器向EAMR换能器提供能量。覆盖层在基板尾缘和激光器之间。激光器电耦合于多个接触件的至少第一部分。接触件提供通过覆盖层和器件层的热连接。接触件的至少第二部分与基板电绝缘。

Description

用于在能量辅助磁记录磁头中提供热管理的方法和系统
技术领域
背景技术
图1示出常规能量辅助磁记录(EAMR)磁盘驱动器10的一部分的侧视图。常规EAMR磁盘驱动器10包括记录介质12、通常附接于悬挂件(未示出)的常规滑动件20和常规激光二极管30。常规滑动件20具有前缘22、尾缘26和背侧24。尽管定名称为“缘”，但是前缘22和尾缘26是滑动件20的表面。前缘22和尾缘26因为常规介质12相对于EAMR换能器28的行进方向而因此定名称。未示出可以是常规EAMR磁盘驱动器10的一部分的其它部件。常规滑动件20通常在其背侧24附接于悬挂件。常规EAMR换能器28与滑动件20耦合。
激光二极管30邻近滑动件20的尾缘26上的EAMR换能器28耦合。来自常规激光二极管30的光大致沿着常规激光二极管30的光轴32提供到滑动件20的尾缘26。更具体地，来自激光二极管30的光被提供到常规EAMR换能器28的光栅(未示出)。耦合于光栅的来自激光二极管30的光接着被提供到波导(未示出)。波导将光引导向常规介质12，加热常规介质12的小的区域。常规EAMR换能器28在常规介质12被加热的区域中对常规介质12磁写入。
尽管常规EAMR磁盘驱动器10可以工作，但是仍期望改进。更具体地，可以期望将激光二极管30物理地集成到常规滑动件20上。然而，滑动件20的背侧24和尾缘26通常即使不添加激光器30也很拥挤。另外，期望将换能器28相对于介质12的升高高度保持为大致不受包括激光二极管30的影响。另外，还期望耗散激光二极管30产生的热。不能适当耗散激光二极管30产生热可能对激光二极管30以及EAMR磁盘驱动器10的其它部件的性能和可靠性产生负面影响。
因此，期望用于在EAMR磁盘驱动器之内集成激光二极管的改进的方法和系统。
发明内容
本发明描述一种用于提供能量辅助磁记录(EAMR)磁头的方法和系统。该方法和系统包括提供基板、至少一个EAMR换能器、覆盖层和至少一个激光器。基板具有前缘和基板尾缘。EAMR换能器位于器件层中和基板尾缘上。覆盖层包括多个接触件。器件层在覆盖层和基板尾缘之间。激光器向EAMR换能器提供能量。覆盖层在基板尾缘和激光器之间。激光器电耦合于多个接触件的至少第一部分。接触件提供通过覆盖层和器件层的热连接。接触件的至少第二部分与基板电绝缘。
附图说明
图1是示出常规能量辅助磁记录磁盘驱动器的一部分的图；
图2是示出EAMR磁盘驱动器的示例实施例的图；
图3是示出EAMR磁头的示例实施例的图；
图4是示出EAMR磁头的另一示例实施例的图；
图5是示出EAMR磁头的另一示例实施例的图；
图6是示出EAMR磁头的另一示例实施例的图；
图7是示出EAMR磁头的另一示例实施例的图；
图8是示出EAMR磁头的另一示例实施例的图；
图9是示出EAMR磁头的另一示例实施例的图；
图10是示出EAMR磁头的另一示例实施例的图；
图11是示出EAMR磁头的制造方法的示例实施例的流程图；
图12是示出EAMR磁头中的热扩散件的制造方法的示例实施例的流程图；以及
图13是示出EAMR磁头中的热扩散件的制造方法的示例实施例的流程图。
具体实施方式
图2示出包括EAMR磁头110的EAMR磁盘驱动器100的示例实施例。图3示出磁盘驱动器100中使用的EAMR磁头110。图2是磁盘驱动器100的侧视图。图3示出EAMR磁头110的分解和立体图。为了清楚，图2-图3不按比例绘制。为了简化，不是EAMR磁盘驱动器100和EAMR磁头110的所有部分都被示出。另外，尽管在具体部件的背景下描述EAMR磁盘驱动器100和EAMR磁头110，但是可以使用其他和/或不同部件。此外，部件的排布可以在不同实施例中改变。
EAMR磁盘驱动器100包括介质102和也称为滑动件的EAMR磁头110。EAMR磁头110包括基板112、器件层120、覆盖层130、激光器140、可选的外顶层150、以及可选的热扩散件160。磁头110具有滑动件前缘114和尾缘118。基板112具有前缘114和基板尾缘116。尽管称为“缘”，缘114、116、和118是表面。器件层120至少包括EAMR换能器(在图2中未示出)并且可以包括读取换能器(未示出)。如果EAMR磁头110是组合磁头，则可以包括读取换能器。在一些实施例中，器件层120是12微米量级的厚度，覆盖层130是15微米量级的厚度，并且基板112是八百五十微米量级的厚度。外顶层150示出包括配置用于激光器140的空腔152、通孔154、用于通孔和垫158的接触件156。激光器140可以是激光二极管。
覆盖层130包括接触件132。接触件132中的至少一些提供通过覆盖层130和器件层120的热传导。在一些实施例中，接触件132将激光器140与基板112热耦合。由此，接触件132相对于周围材料可以具有高热导率。例如，接触件132可以主要包括高热导率的材料，诸如Cu。在具有热扩散件160的实施例中，接触件132与热扩散件160热耦合。接触件132中的至少一些将激光器140与基板112电绝缘。换句话说，激光器140并非通过全部接触件132电耦合于基板112。例如，在一些实施例中，一个或者多个接地接触件将激光器140与基板112电和热连接。然而，剩余接触件132将激光器140和/或其它部件电连接到器件层120的期望部分，但是不连接到基板112。这些接触件仍将激光器140与基板112热连接。接触件132还可以增加宽度使得接触件132占据更大的占位。由此，每个接触件132的更大的部分可以与激光器140物理接触。
在工作中，激光器140向器件层120中的EAMR换能器(未示出)提供光。在一些实施例中，光栅(未示出)用于将光耦合于换能器。激光例如被波导(未示出)导向ABS(air-bearingsurface)。光可以被聚焦到介质102上，例如使用近场换能器(NFT，未示出)。介质的区域由此被加热。接着使用可以被线圈激励的电极以向介质的区域磁写入。
EAMR磁盘驱动器100的热管理可以被改进。具体地，接触件132具有高热导率。由此，激光器140产生的热可以从激光器140传导到基板112，其具有改进的耗散热的能力。还可以使用热扩散件160以向ABS传导热。由此，EAMR磁头110能够更好地管理热，并且由此具有提高的可靠性和性能。此外，使用已经存在的电接触件132用于热耗散。由此可以实现改进的热管理而不会使制造复杂化或者大量占据覆盖层130的更多空间。
图4是示出EAMR磁头210的示例实施例的图。图4示出EAMR磁头210的侧视图和覆盖层视图。为了清楚，图4不按比例绘制。为了简化，未示出EAMR磁头210的全部部分。另外，尽管在具体部件的背景中示出EAMR磁头210，但可以使用其它和/或不同部件。此外，部件的排布可以在不同实施例中改变。EAMR磁头210类似于EAMR磁头110，并且可以在磁盘驱动器100中使用。由此，EAMR磁头210的类似部件具有类似附图标记。EAMR磁头210由此包括具有基板前缘214和基板尾缘216的基板212、器件层220、包括接触件232的覆盖层230和激光器240，分别对应于具有基板前缘114和基板尾缘116的基板112、器件层120、包括接触件132的覆盖层130和激光器140。另外示出额外接触件236、结合垫242和绝缘层244。
从图4可见，激光器240经过可以传导的结合垫242结合到EAMR磁头210。结合垫242将激光器240机械地连接到磁头210。薄的绝缘层244可以将每个接触件232与另一接触件232以及与激光器240电绝缘。然而，在其它实施例中，仅仅可以依靠覆盖层230进行绝缘并且薄的绝缘层244被省略。此外，围绕接触件232的覆盖层230和器件层220是绝缘的，例如氧化铝。由此，接触件232彼此电绝缘除非特别地另行设计。
激光器240电耦合于接触件232中的至少一些。在所示的实施例中，激光器240电连接到全部接触件232。在其它实施例中，激光器240可以仅仅耦合于接触件232中的一部分。接触件232向基板212提供通过覆盖层230和器件层220的热连接。在所示的实施例中，接触件232中的一个将激光器240电和热连接到基板212。然而，在其它实施例中，多个接地接触件232可以将激光器240电和热连接到基板212。剩余的接触件232将激光器240与基板212电隔离但是将激光器240热连接到基板212。在一些实施例中，剩余的接触件232包括薄的绝缘层234，其将邻近激光器240的接触件232的顶部与邻近基板212的接触件232的底部电隔离。由此，绝缘层234充分厚以提供电绝缘，但是充分薄使得到基板212的热连接不断裂。换句话说，绝缘层234充分薄使得热耗散不被明显阻碍并且提供电绝缘。由此，绝缘层234允许通过器件层120的热连接和到器件层120的一部分的电连接。绝缘层234可以位于将被进行电连接的器件层220中的层处或者之下。在一些这种实施例中，接触件232的导电部分包括一种或者多种材料，诸如Cu、Au、其合金、NiFe、CoFe和/或具有高热导率和电导率的其它材料。绝缘层234可以包括电和热绝缘材料，诸如氧化铝或者二氧化硅。在其它实施例中，绝缘层234可以是导热但是电绝缘的。例如，可以使用SiC或者类金刚石碳(DLC)。在一些实施例中，接触件232的在绝缘层234下方的部分可以具有高热导率但是电绝缘。在其它实施例中，接触件232的在绝缘层234下方的部分可以具有高热导率和电导率。接触件232按照期望电学地工作，但仍提供激光器240和基板212之间的热路径。
EAMR磁头210按照与EAMR磁头110类似的方式工作。由此，可以改进EAMR磁头210和其中可以使用EAMR磁头210的EAMR磁盘驱动器100的热管理。具体地，除了电绝缘层234，接触件232也具有高热导率。由此，激光器240产生的热可以从激光器240传导到基板212，其具有改进的耗散热的能力。由此，EAMR磁头210能够更好地管理热并且由此具有提高的可靠性和性能。使用已经存在的电接触件232用于热耗散。由此，可以实现改进的热管理而不使制造复杂化或者大量占据覆盖层230的更多空间。
图5是示出EAMR磁头210’的示例实施例的图。图5示出EAMR磁头210’的侧视图和覆盖层视图。为了清楚，图5不按比例绘制。为了简化，未示出EAMR磁头210’的全部部分。另外，尽管在具体部件的背景中示出EAMR磁头210’，但可以使用其它和/或不同部件。此外，部件的排布可以在不同实施例中改变。EAMR磁头210’类似于EAMR磁头110/210，并且可以在磁盘驱动器100中使用。由此，EAMR磁头210’的类似部件具有类似附图标记。EAMR磁头210’由此包括具有基板前缘214’和基板尾缘216’的基板212’、器件层220’、包括接触件232’的覆盖层230’、和激光器240’，分别对应于具有基板前缘114/214和基板尾缘116/216的基板112/212、器件层120/220、包括接触件132/232的覆盖层130/230和激光器140/240。另外示出分别类似于接触件236、结合垫242和绝缘层244的额外接触件236’、结合垫242’、和绝缘层244’。此外，尽管示出一个接地接触件232’，但剩余接触件232’在其内具有绝缘层234’。由此，接触件232’类似于接触件132/232。
另外，接触件232’的占位已经增大。如从覆盖层视图可见，接触件232’占据激光器240’的占位的更大部分。在所示的实施例中，接触件232’在一个方向上(在图5中从顶到底)延伸跨过激光器240’。在图5中接触件232’在水平方向上彼此分离。该分离允许接触件232’彼此电隔离。在一些实施例中，该分离是在二十五微米量级。在一些实施例中，接触件232’之间在水平方向上的距离是或者略微大于最小分离。最小分离是允许接触件232’彼此电隔离的最小距离。增加接触件232’的占位增加EAMR磁头210’中导热材料的量，并增加激光器240’和接触件232’之间的热连接。
EAMR磁头210’按照与EAMR磁头110/210类似的方式工作。由此，可以改进EAMR磁头210’和其中可以使用EAMR磁头210’的EAMR磁盘驱动器100的热管理。具体地，除了电绝缘层234’，接触件232’也具有高热导率。由此，激光器240’产生的热可以从激光器240’传导到基板212’，其具有改进的耗散热的能力。通过增加接触件232’的占位可以增强热传导。由此，EAMR磁头210’能够更好地管理热并且由此具有提高的可靠性和性能。使用已经存在的电接触件232’用于热耗散。由此，可以实现改进的热管理而不使制造复杂化或者大量占据覆盖层230’的更多空间。
图6是示出EAMR磁头210”的示例实施例的图。图6示出EAMR磁头210”的侧视图和覆盖层视图。为了清楚，图6不按比例绘制。为了简化，未示出EAMR磁头210”的全部部分。另外，尽管在具体部件的背景中示出EAMR磁头210”，但可以使用其它和/或不同部件。此外，部件的排布可以在不同实施例中改变。EAMR磁头210”类似于EAMR磁头110/210/210’，并且可以在磁盘驱动器100中使用。由此，EAMR磁头210”的类似部件具有类似附图标记。EAMR磁头210”由此包括具有基板前缘214”和基板尾缘216”的基板212”、器件层220”、包括接触件232”的覆盖层230”和激光器240”，分别对应于具有基板前缘114/214/214’和基板尾缘116/216/216’的基板112/212/212’、器件层120/220/220’、包括接触件132/232/232’的覆盖层130/230/230’和激光器140/240/240’。另外示出分别类似于接触件236/236’、结合垫242/242’和绝缘层244/244’的额外接触件236”，结合垫242”和绝缘层244”。此外，示出一个接地接触件232”。剩余接触件232”中具有绝缘层234”。由此，接触件232’类似于接触件132/232/232’。尽管示出具有更小的占位，但类似于接触件232的占位，接触件232”可能具有更大的占位。例如，接触件232”可以类似于接触件232’。
另外，示出外顶层250。外顶层250类似于图2-图3示出的外顶层150。由此，外顶层250包括类似于空腔150的空腔252和类似于接触件/垫156/158的接触件256。尽管没有单独示出，空腔252可以具有反射表面以重引导来自激光器240”的光。空腔252中有激光器240”。由于外顶层250可以被密封到覆盖层230”，激光器240”可以被密封在空腔252中。
EAMR磁头210”按照与EAMR磁头110/210/210’类似的方式工作。由此，可以改进EAMR磁头210”和其中可以使用EAMR磁头210”的EAMR磁盘驱动器100的热管理。具体地，接触件232”提供激光器240”和基板212”之间的高热导率路径，以及期望的电功能。激光器240”产生的热可以从激光器240”传导到基板212”，其具有改进的耗散热的能力。由此，EAMR磁头210”能够更好地管理热并且由此具有提高的可靠性和性能。使用已经存在的电接触件232”用于热耗散。由此，可以实现改进的热管理而不使制造复杂化或者大量占据覆盖层230”的更多空间。此外，激光器240”被包含在外顶层250的空腔252中。由此，激光器240”可以被保护从而在制造和使用期间免受损坏。
图7是示出EAMR磁头310的示例实施例的图。图7示出EAMR磁头310的侧视图和基板视图。为了清楚，图7不按比例绘制。为了简化，未示出EAMR磁头310的全部部分。另外，尽管在具体部件的背景中示出EAMR磁头310，但可以使用其它和/或不同部件。此外，部件的排布可以在不同实施例中改变。EAMR磁头310类似于EAMR磁头110/210/210’/210”，并且可以在磁盘驱动器100中使用。由此，EAMR磁头310的类似部件具有类似附图标记。EAMR磁头310由此包括具有基板前缘314和基板尾缘316的基板312、器件层320、包括接触件332的覆盖层330和激光器340，分别对应于具有基板前缘114/214/214’/214”和基板尾缘116/216/216’/216”的基板112/212/212’/212”、器件层120/220/220’/220”、包括接触件132/232/232’/232”的覆盖层130/230/230’/230”和激光器140/240/240’/240”。另外示出分别类似于接触件236/236’/236”、结合垫242/242’/242”和绝缘层244/244’/244”的额外接触件336、结合垫342和绝缘层344。部件312、314、316、320、330、332、334、336、340、342和344的结构和功能分别类似于部件112/212/212’/212”、114/214/214’/214”、116/216/216’/216”、120/220/220’/220”、130/230/230’/230”、132/232/232’/232”、234/234’/234”、136/236/236’/236”、140/240/240’/240”和142/242/242’/242”的结构和功能。尽管未示出，磁头310可以包括类似于外顶层150和250的外顶层。
磁头310还包括热扩散件360。热扩散件360包括高热导率的材料，诸如Cu、Ag、Au、其合金、NiFe和/或CoFe。在一些实施例中，热扩散件360可以包括绝缘材料，诸如SiC和/或DLC。热扩散件360可以还包括高热导率材料的混合物，诸如铜基体中的金刚石颗粒。热扩散件360与接触件332中的至少一些热耦合。在所示的实施例中，热扩散件360与全部接触件332接触并且由此热耦合。然而，在其它实施例中，热扩散件360可以仅仅与接触件332中的一些热耦合。在所示的实施例中，热扩散件360包括多个条。然而，在其它实施例中，热扩散件360可以具有其它配置。此外，热扩散件360的一部分占据部分ABS。在其它实施例中，热扩散件360可以从ABS凹进。例如，可以期望热扩散件360从ABS凹进以防止热扩散件360的腐蚀。然而，在一些这种实施例中，热扩散件360仍与ABS热连接。最终，热扩散件360示出为在基板312中凹进。然而，在其它实施例中，热扩散件360可以位于基板尾缘316上。在这些实施例中，热扩散件360可以具有围绕它的绝缘层。
EAMR磁头310按照与EAMR磁头110/210/210’/210”类似的方式工作。由此，可以改进EAMR磁头310和其中可以使用EAMR磁头310的EAMR磁盘驱动器100的热管理。具体地，接触件332提供激光器340和基板312之间的高热导率路径，以及期望的电功能。激光器340产生的热可以从激光器340传导到基板312，其具有改进的耗散热的能力。由此，EAMR磁头310能够更好地管理热并且由此具有提高的可靠性和性能。使用已经存在的电接触件332用于热耗散。由此，可以实现改进的热管理而不使制造复杂化或者大量占据覆盖层330的更多空间。此外，磁头310包括热扩散件360。热扩散件360可以将来自激光器340的热进一步传导穿过基板312。在其中热扩散件360占据ABS的一部分或者仅仅从ABS略微凹进的实施例中，热扩散件360还向ABS传导热。ABS可以提供用于耗散来自激光器340的热的改进机构。另外，因为热扩散件360配置为一系列条，可以减轻基板312的区域的热膨胀。由此，可以进一步改进EAMR磁头310的热管理。由此可以增强EAMR磁头310的性能和可靠性。
图8是示出EAMR磁头310’的示例实施例的图。图8示出EAMR磁头310’的侧视图和覆盖层视图。为了清楚，图8不按比例绘制。为了简化，未示出EAMR磁头310’的全部部分。另外，尽管在具体部件的背景中示出EAMR磁头310’，但可以使用其它和/或不同部件。此外，部件的排布可以在不同实施例中改变。EAMR磁头310’类似于EAMR磁头110/210/210’/210”/310，并且可以在磁盘驱动器100中使用。由此，EAMR磁头310’的类似部件具有类似附图标记。EAMR磁头310’由此包括具有基板前缘314’和基板尾缘316’的基板312’、器件层320’、包括接触件332’的覆盖层330’和激光器340’，分别对应于具有基板前缘314和基板尾缘316的基板312、器件层320、包括接触件332的覆盖层330和激光器340。另外示出分别类似于接触件336、结合垫342和绝缘层344的额外接触件336’、结合垫342’和绝缘层344’。部件312’、314’、316’、320’、330’、332’、334’、336’、340’、342’和344’的结构和功能分别类似于部件312、314、316、320、330、332、334、336、340、342和344的结构和功能。尽管未示出，磁头310’可以包括类似于外顶层150和250的外顶层。
磁头310’还包括热扩散件360’。热扩散件360’类似于热扩散件360。然而，热扩散件配置为矩形板(slab)。热扩散件360’包括高热导率的材料，诸如Cu、Ag、Au、其合金、NiFe和/或CoFe。在一些实施例中，热扩散件360’可以包括绝缘材料，诸如SiC和/或DLC。热扩散件360’可以还包括材料的混合物，诸如铜基体中的金刚石颗粒。热扩散件360’与接触件332’中的至少一些热耦合。在所示的实施例中，热扩散件360’与全部接触件332’接触并且由此热耦合。然而，在其它实施例中，热扩散件360’可以仅仅与接触件332’中的一些热耦合。在所示的实施例中，热扩散件360’是传导板。然而，在其它实施例中，热扩散件360’可以具有其它配置。此外，热扩散件360’的一部分占据ABS的一部分。在其它实施例中，热扩散件360’可以从ABS凹进。例如，可以期望热扩散件360’从ABS凹进以防止热扩散件360’的腐蚀。然而，在一些这种实施例中，热扩散件360’仍与ABS热连接。然而，在其它实施例中，热扩散件360’可以位于基板尾缘316’上。在这些实施例中，热扩散件360’可以具有围绕它的绝缘层。
EAMR磁头310’按照与EAMR磁头110/210/210’/210”/310类似的方式工作。由此，通过使用接触件332’，可以改进EAMR磁头310’和其中可以使用EAMR磁头310’的EAMR磁盘驱动器100的热管理。由此，EAMR磁头310’能够更好地管理热而不使制造复杂化或者大量占据覆盖层330’的更多空间。此外，磁头310’包括热扩散件360’。热扩散件360’可以将来自激光器340’的热进一步传导穿过基板312’。在其中热扩散件360’占据ABS的一部分或者仅仅从ABS略微凹进的实施例中，热扩散件360’还向ABS传导热。ABS可以提供用于耗散来自激光器340’的热的改进机制。由此，可以进一步改进EAMR磁头310’的热管理。由此可以增强EAMR磁头310’的性能和可靠性。
图9是示出EAMR磁头310”的示例实施例的图。图9示出EAMR磁头310”的侧视图和覆盖层视图。为了清楚，图9不按比例绘制。为了简化，未示出EAMR磁头310”的全部部分。另外，尽管EAMR磁头310”在具体部件的背景中示出可以使用其它和/或不同部件。此外，部件的排布可以在不同实施例中改变。EAMR磁头310”类似于EAMR磁头110/210/210’/210”/310/310’，并且可以在磁盘驱动器100中使用。由此，EAMR磁头310”的类似部件具有类似附图标记。EAMR磁头310”由此包括具有基板前缘314”和基板尾缘316”的基板312”、器件层320”、包括接触件332”的覆盖层330”和激光器340”，分别对应于具有基板前缘314/314’和基板尾缘316/316’的基板312/312’、器件层320/320’、包括接触件332/332’的覆盖层330/330’和激光器340/340’。另外示出分别类似于接触件336/336’、结合垫342/342’和绝缘层344/344’的额外接触件336”、结合垫342”和绝缘层344”。部件312”、314”、316”、320”、330”、332”、334”、336”、340”、342”和344”的结构和功能分别类似于部件312/312’、314/314’、316/316’、320/320’、330/330’、332/332’、334/334’、336/336’、340/340’、342/342’和344/344’的结构和功能。尽管未示出，磁头310”可以包括类似于外顶层150和250的外顶层。
磁头310”还包括类似于热扩散件360和360’的热扩散件360”。更具体地，热扩散件360”类似于热扩散件360’在于它是板配置。热扩散件360”的结构和功能由此类似于热扩散件360和360’的结构和功能。然而，热扩散件360”位于基板尾缘316”。由此，绝缘362被设置为围绕热扩散件360”。
EAMR磁头310”按照与EAMR磁头110/210/210’/210”/310/310’类似的方式工作。由此，通过使用接触件332”，可以改进EAMR磁头310”和其中可以使用EAMR磁头310”的EAMR磁盘驱动器100的热管理。由此，EAMR磁头310”能够更好地管理热而不使制造复杂化或者大量占据覆盖层330”的更多空间。此外，磁头310”包括热扩散件360”。热扩散件360”可以将来自激光器340”的热进一步传导穿过基板312”。在其中热扩散件360”占据ABS的一部分或者仅仅从ABS略微凹进的实施例中，热扩散件360”还向ABS传导热。ABS可以提供用于耗散来自激光器340”的热的改进机构。由此，可以进一步改进EAMR磁头310”的热管理。由此可以增强EAMR磁头310”的性能和可靠性。
图10是示出EAMR磁头310”’的示例实施例的图。图10示出EAMR磁头310”’的侧视图和覆盖层视图。为了清楚，图10不按比例绘制。为了简化，未示出EAMR磁头310”’的全部部分。另外，尽管在具体部件的背景中示出EAMR磁头310”’，但可以使用其它和/或不同部件。此外，部件的排布可以在不同实施例中改变。EAMR磁头310”’类似于EAMR磁头110/210/210’/210”/310/310’/310”，并且可以在磁盘驱动器100中使用。由此，EAMR磁头310”’的类似部件具有类似附图标记。EAMR磁头310”’由此包括具有基板前缘314”’和基板尾缘316”’的基板312”’、器件层320”’、包括接触件332”’的覆盖层330”’和激光器340”’，分别对应于具有基板前缘314/314’/314”和基板尾缘316/316’/316”的基板312/312’/312”、器件层320/320’/320”、包括接触件332/332’/332”的覆盖层330/330’/330”和激光器340/340’/340”。另外示出分别类似于接触件336/336’/336”、结合垫342/342’/342”和绝缘层344/344’/344”的额外接触件336”’、结合垫342”’和绝缘层344”’。部件312”’、314”’、316”’、320”’、330”’、332”’、334”’、336”’、340”’、342”’和344”’的结构和功能分别类似于部件312/312’/312”、314/314’/314”、316/316’/316”、320/320’/320”、330/330’/330”、332/332’/332”、334/334’/334”、336/336’/336”、340/340’/340”、342/342’/342”和344/344’/344”的结构和功能。尽管未示出，磁头310”’可以包括类似于外顶层150和250的外顶层。
热扩散件360”’类似于热扩散件360和360’。更具体地，热扩散件360”类似于热扩散件360和360’在于热扩散件360”具有高热导率并且用于将热扩散穿过基板312”’。然而，热扩散件360”’是电绝缘的。由此，热扩散件360”’允许接触件332”彼此电绝缘。热扩散件360”’并入覆盖层330”。然而，在其它实施例中，热扩散件360”’可以按照与热扩散件360、360’和/或360”类似的方式并入基板312”’。
EAMR磁头310”’按照与EAMR磁头110/210/210’/210”/310/310’/310”类似的方式工作。由此，通过使用接触件332”’，可以改进EAMR磁头310”’和其中可以使用EAMR磁头310”’的EAMR磁盘驱动器100的热管理。由此，EAMR磁头310”’能够更好地管理热而不使制造复杂化或者大量占据覆盖层330”’的更多空间。此外，磁头310”’包括热扩散件360”’。热扩散件360”’可以将来自激光器340”’的热进一步传导穿过基板312”’。在其中热扩散件360”’占据ABS的一部分或者仅仅从ABS略微凹进的实施例中，热扩散件360”’还向ABS传导热。ABS可以提供用于耗散来自激光器340”’的热的改进机构。另外，由于热扩散件360”’并入覆盖层330”’或者作为其一部分，不需要设置单独的热扩散件。此外，在一些实施例中，如果热能够通过热扩散件360”’/覆盖层330”’充分耗散，则接触件332”’不需要延伸到基板312”’。磁头310”’的制造可以被简化。由此，可以进一步改进EAMR磁头310”’的热管理。由此可以增强EAMR磁头310”’的性能和可靠性。
由此，EAMR磁头110、210、210’、210”、310、310’、310”和310”’可以具有改进的热属性。尽管在每个磁头110、210、210’、210”、310、310’、310”和310”’中示出和描述具体特征，但是磁头110、210、210’、210”、310、310’、310”和310”’的具体特征可以被选择并与相同或者其它磁头110、210、210’、210”、310、310’、310”和310”’的特征组合，和/或未示出的其它磁头。例如，热扩散件360’和/或360”可以并入磁头210。由此，可以改进EAMR磁头110、210、210’、210”、310、310’、310”和310”’的热管理。
图11是示出EAMR磁头的制造方法的示例实施例的流程图。尽管示出特定步骤，一些步骤可以省略、交叉、以其它顺序进行和/或合并。方法400在EAMR磁头110的背景中描述。然而，方法400可以用于其它EAMR磁头，包括但不限于EAMR磁头110、210、210’、210”、310、310’、310”和310”’。磁头110在具有对应于基板尾缘114的正面的基板112上制造。
通过步骤402，可选地提供热扩散件160。如果热扩散件160类似于热扩散件360、360’或者360”，则可以在制造EAMR换能器和器件层120中的其它部件之前进行步骤402。然而，如果热扩散件160类似于热扩散件360”’，则可以稍晚进行步骤402。如果不使用热扩散件，则步骤402被省略。
通过步骤404，在基板112正面上针对多个EAMR磁头中的每个在器件层120中制造EAMR换能器。步骤404包括提供光学部件，诸如针对形成的每个磁头110的光栅、波导和近场换能器。另外，还可以制造诸如屏蔽罩、电极、线圈和读取传感器的磁部件。
通过步骤406，在器件层上提供覆盖层130。覆盖层130包括延伸穿过器件层120的接触件332。因此，在一些实施例中，步骤406包括在覆盖层130和器件层120中形成通孔并且用合适的材料填充通孔。然而，如以上讨论的，接触件132之内可以包括绝缘层，诸如层234。因此，接触件132的在器件层120中的部分可以作为步骤404的一部分形成。例如，可以在器件层120中形成对应于接触件132的通孔。用导热材料填充通孔至少直至绝缘层，诸如绝缘层234。导热材料还可以是导电的。由此，可以接着在器件层120中的期望高度提供绝缘层。如果使用电绝缘材料，则可以提供电绝缘/热传导材料直至绝缘层234的顶部。电和热传导材料接着可以填充器件层120中的通孔的剩余部分。这些活动可以作为步骤404的一部分进行。步骤406可以接着包括在覆盖层130中形成通孔并且用导热导电材料填充这些通孔。此外，如以上讨论的，步骤406可以包括配置接触件使得它们占据激光器140的占位的更大部分。例如，可以在步骤406中制造接触件232’。另外，如果使用绝缘热扩散件360”’，则步骤406可以包括制造热扩散件360”’。
通过步骤408，针对被制造的每个EAMR磁头110提供至少一个激光器。步骤408可以包括将激光器140结合到覆盖层130，例如使用诸如结合垫242的结合垫。由此，激光器140与EAMR磁头110热、电、机械地耦合。
通过步骤410，可选地将激光器140包含在外顶层150中。由此，激光器140可以被提供在空腔152中。外顶层150可以被结合到覆盖层130。
通过步骤412，将基板112分离为EAMR磁头。例如，基板112可以被分成块(diced)，基板112可以被折叠以露出ABS。由此，可以制造EAMR磁头110。EAMR磁头210、210’、210”、310、310’、310”和310”’可以按照类似方式制造。因此，能够实现EAMR磁头110、210、210’、210”、310、310’、310”和310”’的优点。
图12是示出EAMR磁头的制造方法420的示例实施例的流程图。具体地，方法420可以用于提供热扩散件160、360、360’和/或360”。尽管示出特定步骤，一些步骤可以省略、交叉、以其它顺序进行和/或合并。方法420在EAMR磁头110的背景中描述。然而，方法420可以用于其它EAMR磁头，包括但不限于EAMR磁头110、210、210’、210”、310、310’、310”和310”’。
通过步骤422，在基板312中形成凹陷。针对热扩散件360，形成的凹陷包括条。然而，对于热扩散件的不同配置，形成的凹陷可以具有其它形状。例如，对于热扩散件360’，凹陷可以是矩形板。
通过步骤424提供导热材料。在一些实施例中，仅仅在凹陷中沉积导热材料。然而，在其它实施例中，可以在凹陷之外沉积导热材料。例如，在步骤424中可以进行全膜沉积。
通过步骤426，换能器可以接着被平坦化。例如，可以进行化学机械平坦化(CMP)。由此，凹陷中的导热材料被露出。由此，可以提供具有期望配置的热扩散件360或者360’。因此，EAMR磁头110、210、210’、210”、310、310’和/或310”可以具有改进的热管理。
图13是示出EAMR磁头的制造方法420’的示例实施例的流程图。具体地，方法420’可以用于提供热扩散件360”’。尽管示出特定步骤，一些步骤可以省略、交叉、以其它顺序进行和/或合并。方法420在EAMR磁头310”的背景中描述。然而，方法420可以用于其它EAMR磁头，包括但不限于EAMR磁头110、210、210’、210”、310、310’、310”和/或310”’。
通过步骤422’，以期望配置在基板上提供导热材料。步骤422’可以包括沉积全膜，遮蔽导热材料的一部分，接着去除导热材料的露出部分。在另一实施例中，步骤422’可以包括在基板312”上提供掩膜。该掩膜露出其上面将提供有热扩散件360”的基板312”的一部分。接着在基板312”的露出导热材料部分上沉积导热材料。由此，热扩散件360”的期望形状被制造。
之后通过步骤424’沉积绝缘材料。步骤422’中提供的导热材料还可以是导电的。期望层的剩余部分是电绝缘的。因此，提供了绝缘材料。
之后通过步骤426’换能器可以被平坦化。例如，可以进行CMP。由此，导热材料被露出。由此，可以提供被绝缘材料362围绕的热扩散件360”。因此，EAMR磁头110、210、210’、210”、310、310’和/或310”可以具有改进的热管理。
使用方法400、420和420’，可以制造期望的EAMR磁头110、210、210’、210”、310、310’、310”和/或310”’。由此，可以提供具有改进的热属性的EAMR磁头110、210、210’、210”、310、310’、310”和/或310”’。

Claims (28)

1.一种能量辅助磁记录磁头，即EAMR磁头，其包括：
基板，其包括前缘和基板尾缘；
至少一个EAMR换能器，其位于器件层中和基板尾缘上；
覆盖层，包括多个接触件，所述器件层位于所述覆盖层和所述基板尾缘之间；
用于向所述EAMR换能器提供能量的至少一个激光器，所述覆盖层位于所述基板尾缘和所述至少一个激光器之间，所述至少一个激光器电耦合于所述多个接触件的至少第一部分，所述多个接触件提供所述至少一个激光器和所述基板之间通过所述覆盖层并通过所述器件层的热连接，所述多个接触件的至少第二部分与所述基板电绝缘。
2.根据权利要求1所述的EAMR磁头，其中所述覆盖层还包括至少一个额外接触件，所述至少一个激光器与所述至少一个额外接触件电绝缘。
3.根据权利要求1所述的EAMR磁头，其中所述至少一个激光器具有位于所述覆盖层上的激光器占位，并且其中所述多个接触件在第一方向上至少越过所述激光器占位延伸，并且在第二方向上被分开一定距离，所述距离使所述多个电接触件中的每个与所述覆盖层中的任意其它电接触件电隔离。
4.根据权利要求3所述的EAMR磁头，其中所述距离是最小间隔，以使得所述多个电接触件中的每个与所述覆盖层中的任意其它电接触件电隔离。
5.根据权利要求1所述的EAMR磁头，还包括：
多个激光器结合垫，用于将所述至少一个激光器与所述多个接触件电连接并且将所述至少一个激光器与所述覆盖层机械地耦合。
6.根据权利要求1所述的EAMR磁头，其中所述多个接触件的第二部分中的每个包括在其中的绝缘层，所述绝缘层允许通过所述器件层的热连接和到所述器件层的一部分的电连接。
7.根据权利要求1所述的EAMR磁头，还包括：
包围所述至少一个激光器的外顶层。
8.根据权利要求1所述的EAMR磁头，还包括：
邻近所述基板的一部分的热扩散件，所述热扩散件与所述多个接触件的至少第三部分热连接。
9.根据权利要求8所述的EAMR磁头，其中所述EAMR磁头包括气垫面，该气垫面即ABS，并且其中所述热扩散件的一部分占据所述ABS的一部分。
10.根据权利要求8所述的EAMR磁头，其中所述热扩散件包括导热板。
11.根据权利要求8所述的EAMR磁头，其中所述热扩散件包括多个导热条。
12.根据权利要求1所述的EAMR磁头，其中所述覆盖层还包括：
电绝缘的热扩散件，其与所述多个接触件热连接并且将所述多个接触件电绝缘。
13.根据权利要求1所述的EAMR磁头，其中所述多个接触件包括Cu、Ag和Au中的至少一个。
14.根据权利要求8所述的EAMR磁头，其中所述多个接触件的所述第三部分通过所述热扩散件提供与包括所述基板的一部分的气垫面的热连接。
15.一种能量辅助磁记录磁盘驱动器，即EAMR磁盘驱动器，包括：
用于存储数据的介质，以及
滑动件，其包括基板、器件层、位于所述器件层中的至少一个EAMR换能器和覆盖层，所述基板包括前缘和基板尾缘，所述器件层位于所述基板尾缘上，所述覆盖层包括多个接触件，所述器件层位于所述覆盖层和所述基板尾缘之间；以及
用于向所述EAMR换能器提供能量的至少一个激光器，所述覆盖层位于所述基板尾缘和所述至少一个激光器之间，所述至少一个激光器电耦合于所述多个接触件的至少第一部分，所述多个接触件的至少第二部分与所述基板电绝缘，所述多个接触件提供所述至少一个激光器和所述基板之间通过所述覆盖层并通过所述器件层的热连接。
16.根据权利要求15所述的EAMR磁盘驱动器，其中所述滑动件还包括：
邻近所述基板的一部分的热扩散件，所述热扩散件与所述多个接触件的至少第三部分热连接，所述多个接触件的所述第三部分通过所述热扩散件提供与包括所述基板的一部分的气垫面的热连接。
17.一种提供包括多个滑动件的多个能量辅助磁记录磁头的方法，即提供包括多个滑动件的多个EAMR磁头的方法，所述方法包括：
在具有对应于所述多个滑动件的尾缘的正面的基板上针对所述多个EAMR磁头中的每个在器件层中制造EAMR换能器；
提供包括针对所述多个EAMR磁头中的每个的多个接触件的覆盖层，所述器件层位于所述覆盖层和所述基板的所述正面之间；
针对所述多个EAMR磁头中的每个提供至少一个激光器，所述至少一个激光器用于向所述EAMR换能器提供能量，所述覆盖层位于所述基板的正面和所述至少一个激光器之间，所述至少一个激光器电耦合于所述多个接触件的至少第一部分，所述多个接触件提供所述至少一个激光器和所述基板之间通过所述覆盖层并通过所述器件层的热连接，所述多个接触件的至少第二部分与所述基板电绝缘；以及
将所述基板分成多个EAMR磁头。
18.根据权利要求17所述的方法，其中所述至少一个激光器在所述覆盖层上具有激光器占位，并且其中所述多个接触件在第一方向上至少延伸越过所述激光器占位，并且在第二方向上被分开一定距离，所述距离是使得所述多个电接触件中的每个与所述覆盖层中的任意其它电接触件电隔离的最小间隔。
19.根据权利要求17所述的方法，还包括：
针对所述多个EAMR磁头中的每个提供多个激光器结合垫，所述多个激光器结合垫用于将所述至少一个激光器与所述多个接触件电连接并且将所述至少一个激光器与所述覆盖层机械连接；以及
将所述至少一个激光器结合于所述多个激光器结合垫。
20.根据权利要求17所述的方法，其中所述多个接触件的所述第二部分中的每个在其内包括绝缘层，所述绝缘层允许通过所述器件层的热连接和到所述器件层的一部分的电连接，并且提供所述EAMR换能器的步骤还包括：
在所述器件层中提供对应于所述多个接触件的多个通孔；
在所述多个通孔中提供至少一个导电导热层；
针对与所述多个接触件的所述第二部分对应的所述多个通孔的一部分，在所述器件层中的期望位置沉积绝缘层；以及
在所述多个通孔中沉积至少一个额外的导电导热层。
21.根据权利要求17所述的方法，还包括：
在外顶层中包围针对所述多个EAMR磁头中的每个的所述至少一个激光器。
22.根据权利要求17所述的方法，还包括：
邻近所述基板的一部分提供热扩散件，所述热扩散件与所述多个接触件的至少第三部分热连接。
23.根据权利要求22所述的方法，其中所述EAMR磁头包括气垫面，气垫面即ABS，并且其中所述提供所述热扩散件的步骤还包括：
提供占据所述ABS的一部分的所述热扩散件的一部分。
24.根据权利要求22所述的方法，其中所述提供所述热扩散件的步骤还包括：
针对所述多个EAMR磁头中的每个在所述基板中形成凹陷；以及
在所述凹陷中提供导热板。
25.根据权利要求22所述的方法，其中所述提供所述热扩散件的步骤还包括：
在所述基板上提供导热板；
在所述导热板上提供绝缘层；以及
平坦化所述基板，露出所述导热板的至少一部分。
26.根据权利要求22所述的方法，其中所述提供所述热扩散件的步骤还包括：
针对所述多个EAMR磁头中的每个在所述基板中形成凹陷；以及
在所述凹陷中提供多个导热条。
27.根据权利要求22所述的方法，其中所述提供所述热扩散件的步骤还包括：
在所述基板上提供多个导热条；
在所述多个导热条上提供绝缘层；以及
平坦化所述基板，露出所述多个导热条的至少一部分。
28.根据权利要求17所述的方法，其中所述提供所述覆盖层的步骤还包括：
提供与所述多个接触件热连接并且将所述多个接触件电绝缘的电绝缘热扩散件。
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Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8441896B2 (en) 2010-06-25 2013-05-14 Western Digital (Fremont), Llc Energy assisted magnetic recording head having laser integrated mounted to slider
US8665567B2 (en) 2010-06-30 2014-03-04 Western Digital Technologies, Inc. Suspension assembly having a microactuator grounded to a flexure
US9053731B2 (en) * 2010-07-09 2015-06-09 HGST Netherlands B.V. Extended cavity VCSEL mounted to substrate with electrical and thermal contact to substrate and optical power directed toward substrate
US8518279B1 (en) * 2010-11-15 2013-08-27 Western Digital (Fremont), Llc Method and system for providing a laser cavity for an energy assisted magnetic recording head
US8614933B2 (en) * 2011-01-19 2013-12-24 Headway Technologies, Inc. Optical unit protection on a thermally-assisted magnetic recording head
US8705323B2 (en) 2011-10-31 2014-04-22 HGST Netherlands B.V. TAR temperature sensor having faster response time
US9129625B2 (en) * 2012-01-16 2015-09-08 Seagate Technology Llc Perpendicular magnetic recording heads including components made of nickel alloys
US8259540B1 (en) * 2012-01-16 2012-09-04 Seagate Technology Llc Heat assisted magnetic recording (HAMR) heads including components made of nickel alloys
US9343084B2 (en) 2012-03-14 2016-05-17 Western Digital Technologies, Inc. Systems and methods for correcting slider parallelism error using compensation lapping
US8514673B1 (en) * 2012-04-24 2013-08-20 Seagate Technology Llc Layered near-field transducer
US8526275B1 (en) * 2012-04-27 2013-09-03 Westerni Digital (Fremont), LLC Systems and methods for dissipating heat from a near-field transducer in an energy assisted magnetic recording assembly
US9293157B1 (en) 2012-06-28 2016-03-22 Western Digital Technologies, Inc. Automated active feedback slice and view milling of magnetic head cross-sections
US9387568B1 (en) 2013-02-27 2016-07-12 Western Digital Technologies, Inc. Systems and methods for correcting fabrication error in magnetic recording heads using magnetic write width measurements
US9431037B2 (en) 2013-03-12 2016-08-30 Western Digitatl (Fremont), LLC Systems and methods for monitoring the power of a light source utilized in energy-assisted magnetic recording
US9093102B1 (en) 2013-03-12 2015-07-28 Western Digital Technologies, Inc. Systems and methods for tuning seed layer hardness in components of magnetic recording systems
US9242340B1 (en) 2013-03-12 2016-01-26 Western Digital Technologies, Inc. Method to stress relieve a magnetic recording head transducer utilizing ultrasonic cavitation
US8929180B1 (en) 2013-04-25 2015-01-06 Western Digital Technologies, Inc. Energy-assisted magnetic recording device having laser driving signal and magnetic write signal sharing same electrical conductor
US8976491B1 (en) 2013-05-09 2015-03-10 Western Digital Technologies, Inc. Disk drive head suspension distal non-op shock limiter with branched arms
US8988830B1 (en) 2013-05-13 2015-03-24 Western Digital (Fremont), Llc Air bearing design to mitigate lube waterfall effect
US8770463B1 (en) 2013-05-20 2014-07-08 Western Digital Technologies, Inc. Head gimbal assembly carrier with adjustable protective bar
US9315008B1 (en) 2013-07-16 2016-04-19 Western Digital Technologies, Inc. Method and apparatus for aligning an illumination unit to a slider for a magnetic recording device
US9070387B1 (en) 2013-08-23 2015-06-30 Western Digital Technologies, Inc. Integrated heat-assisted magnetic recording head/laser assembly
US8923100B1 (en) * 2013-09-11 2014-12-30 Seagate Technology Llc Multi-portion heat sink for use with write pole and near-field transducer
US9135935B1 (en) 2013-10-11 2015-09-15 Western Digital Technologies, Inc. Customized head gimbal assembly bonding skew angle for adjusting two-dimensional magnetic recording reader alignment
US9099145B1 (en) 2013-12-24 2015-08-04 Western Digital (Fremont), Llc High contrast alignment marker
US9870788B2 (en) 2014-01-08 2018-01-16 Western Digital (Fremont), Llc Method of adjusting tilt using magnetic erase width feedback
US9064513B1 (en) 2014-03-07 2015-06-23 Western Digital Technologies, Inc. Disk drive suspension assembly with flexure having dual conductive layers with staggered traces
US9361916B1 (en) 2014-03-13 2016-06-07 Western Digital (Fremont) Electrical lapping guide for dimensional control of back side of heat assisted magnetic recording device
US8934199B1 (en) 2014-03-31 2015-01-13 Western Digital Technologies, Inc. Disk drive head suspension tail with bond pad edge alignment features
US9431044B1 (en) 2014-05-07 2016-08-30 Western Digital (Fremont), Llc Slider having shock and particle resistance
US9007879B1 (en) * 2014-06-10 2015-04-14 Western Digital (Fremont), Llc Interfering near field transducer having a wide metal bar feature for energy assisted magnetic recording
US8958272B1 (en) * 2014-06-10 2015-02-17 Western Digital (Fremont), Llc Interfering near field transducer for energy assisted magnetic recording
US9372078B1 (en) 2014-06-20 2016-06-21 Western Digital (Fremont), Llc Detecting thickness variation and quantitative depth utilizing scanning electron microscopy with a surface profiler
US9805748B1 (en) 2014-06-24 2017-10-31 Western Digital (Fremont), Llc System and method for providing a protective layer having a graded intermediate layer
US9013967B1 (en) 2014-07-02 2015-04-21 HGST Netherlands B.V. Heat-dissipating stepped slider for a heat-assisted magnetic recording head
US9165579B1 (en) 2014-09-26 2015-10-20 Western Digital (Fremont), Llc Air bearing area configuration for reducing flying height hump across a stroke
US9685187B1 (en) 2014-09-26 2017-06-20 Western Digital (Fremont), Llc Bonding tool and method for high accuracy chip-to-chip bonding
US9042048B1 (en) 2014-09-30 2015-05-26 Western Digital (Fremont), Llc Laser-ignited reactive HAMR bonding
US9257138B1 (en) 2014-10-28 2016-02-09 Western Digital (Fremont), Llc Slider assembly and method of manufacturing same
US9183859B1 (en) 2014-11-11 2015-11-10 Western Digital (Fremont), Llc HAMR writer pole length characterization
US9190089B1 (en) 2014-12-24 2015-11-17 Western Digital (Fremont), Llc Air bearing area configuration for contaminating particle removal
US9190090B1 (en) 2014-12-24 2015-11-17 Western Digital (Fremont), Llc Multi step lube blocking air bearing area configuration
US9202478B1 (en) 2015-02-10 2015-12-01 Western Digital (Fremont), Llc Method and structure for soldering a laser submount to a mounting face of a slider
US9171562B1 (en) 2015-03-19 2015-10-27 Western Digital (Fremont), Llc Patterned metal layer to control solder connection between laser and submount in a magnetic head
US9368139B1 (en) 2015-03-20 2016-06-14 Western Digital (Fremont), Llc Slider back side etching to increase shear strength between suspension and slider
US9659589B2 (en) 2015-09-29 2017-05-23 Western Digital (Fremont), Llc Free-standing reflector usable in heat assisted magnetic recording technology
US9659587B1 (en) 2015-11-06 2017-05-23 Western Digital (Fremont), Llc Magnetic head having a reader overcoat with DLC and a recessed writer overcoat without DLC
US10803886B1 (en) * 2017-12-29 2020-10-13 Seagate Technology Llc Bond-pad sharing for head-level thermocouple
US10783918B2 (en) 2018-10-12 2020-09-22 Seagate Technology Llc Heat-assisted magnetic recording device incorporating laser heater for improved laser stability
US10566013B1 (en) * 2019-01-17 2020-02-18 Sae Magnetics (H.K.) Ltd. Semiconductor laser for thermally-assisted magnetic recording head

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1831987A (zh) * 2004-12-22 2006-09-13 西加特技术有限责任公司 使用波导结构和相变介质的光学记录
WO2009150981A1 (ja) * 2008-06-10 2009-12-17 株式会社日立製作所 熱アシスト磁気記録ヘッド

Family Cites Families (578)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8902615A (nl) 1988-11-15 1990-06-01 Seiko Epson Corp Optisch registratiestelsel.
US6078479A (en) 1993-08-10 2000-06-20 Read-Rite Corporation Magnetic tape head with flux sensing element
US6219205B1 (en) 1995-10-10 2001-04-17 Read-Rite Corporation High density giant magnetoresistive transducer with recessed sensor
US5801531A (en) 1996-01-18 1998-09-01 Read-Rite Corporation Apparatus and method for testing magnetic heads using translational slides and a rotatable arm
JPH09235669A (ja) 1996-02-27 1997-09-09 Read Rite S M I Kk 酸化膜の形成方法および電子デバイス
US5764451A (en) 1996-03-28 1998-06-09 Read-Rite Corporation Multi-tapped coil having tapped segments casaded for amplification for improving signal-to-noise ratio
US5793550A (en) 1996-04-23 1998-08-11 Read-Rite Corporation Magnetoresistive head using sense currents of opposite polarities
US6103073A (en) 1996-07-15 2000-08-15 Read-Rite Corporation Magnetic thin film head zero throat pole tip definition
US6181673B1 (en) 1996-07-30 2001-01-30 Read-Rite Corporation Slider design
US6058094A (en) 1996-07-30 2000-05-02 Seagate Technology Inc. Flying magneto-optical head with a steerable mirror
US6034938A (en) 1996-07-30 2000-03-07 Seagate Technology, Inc. Data storage system having an optical processing flying head
US6178150B1 (en) 1996-07-30 2001-01-23 Seagate Technology Inc. Offset optics for use with optical heads
US6850475B1 (en) 1996-07-30 2005-02-01 Seagate Technology, Llc Single frequency laser source for optical data storage system
US6081499A (en) 1997-05-05 2000-06-27 Seagate Technology, Inc. Magneto-optical data storage system having an optical-processing flying head
US5793279A (en) 1996-08-26 1998-08-11 Read-Rite Corporation Methods and compositions for optimizing interfacial properties of magnetoresistive sensors
US6307715B1 (en) 1996-08-30 2001-10-23 Read-Rite Corporation Head suspension having reduced torsional vibration
JPH10143820A (ja) 1996-11-08 1998-05-29 Read Rite S M I Kk インダクティブ／ｍｒ複合型薄膜磁気ヘッド
JPH10188222A (ja) 1996-12-20 1998-07-21 Read Rite S M I Kk 複合型薄膜磁気ヘッド
US5758406A (en) 1997-02-07 1998-06-02 Read-Rite Corporation Method for assembling and electrical testing of a magnetic head
US6173486B1 (en) 1997-03-04 2001-01-16 Read-Rite Corporation Thin film magnetic head with self-aligned pole tips
US5859754A (en) 1997-04-03 1999-01-12 Read-Rite Corporation Magnetoresistive transducer having a common magnetic bias using assertive and complementary signals
US6032353A (en) 1997-05-15 2000-03-07 Read-Rite Corporation Magnetic head with low stack height and self-aligned pole tips
JPH113510A (ja) 1997-06-10 1999-01-06 Read Rite S M I Kk 複合型薄膜磁気ヘッド
US6166891A (en) 1997-06-30 2000-12-26 Read-Rite Corporation Magnetoresistive sensor for high temperature environment using iridium manganese
US5966800A (en) 1997-07-28 1999-10-19 Read-Rite Corporation Method of making a magnetic head with aligned pole tips and pole layers formed of high magnetic moment material
US6775902B1 (en) 1997-07-28 2004-08-17 Western Digital (Fremont) Inc. Method of making a magnetic head with aligned pole tips
US5966591A (en) 1997-08-07 1999-10-12 Read-Rite Corporation Method and tool for handling micro-mechanical structures
US6073338A (en) 1997-08-19 2000-06-13 Read-Rite Corporation Thin film read head with coplanar pole tips
US6188549B1 (en) 1997-12-10 2001-02-13 Read-Rite Corporation Magnetoresistive read/write head with high-performance gap layers
US6275354B1 (en) 1998-01-21 2001-08-14 Read-Rite Corporation Magnetic head with a toroidal coil encompassing only one yoke layer
US5996213A (en) 1998-01-30 1999-12-07 Read-Rite Corporation Thin film MR head and method of making wherein pole trim takes place at the wafer level
US6108166A (en) 1998-03-12 2000-08-22 Read-Rite Corporation Current-pinned spin valve sensor
US6043959A (en) 1998-03-23 2000-03-28 Read-Rite Corporation Inductive write head formed with flat yoke and merged with magnetoresistive read transducer
US6136166A (en) 1998-03-27 2000-10-24 Read-Rite Corporation Apparatus for producing a uniform magnetic field over a large surface area of a wafer
US6399179B1 (en) 1998-04-03 2002-06-04 Intri-Plex Technologies, Inc. Base plate for suspension assembly in hard disk drive with stress isolation
US6046885A (en) 1998-04-03 2000-04-04 Intri-Plex Technologies, Inc. Base plate suspension assembly in a hard disk drive with step in flange
US6034851A (en) 1998-04-07 2000-03-07 Read-Rite Corporation Shorting bar and test clip for protecting magnetic heads from damage caused by electrostatic discharge during manufacture
US6137662A (en) 1998-04-07 2000-10-24 Read-Rite Corporation Magnetoresistive sensor with pinned SAL
US6049650A (en) 1998-04-17 2000-04-11 Seagate Technology, Inc. Structure for micro-machine optical tooling and method for making and using
US6055138A (en) 1998-05-06 2000-04-25 Read-Rite Corporation Thin film pedestal pole tips write head having narrower lower pedestal pole tip
US6178066B1 (en) 1998-05-27 2001-01-23 Read-Rite Corporation Method of fabricating an improved thin film device having a small element with well defined corners
JPH11354859A (ja) 1998-06-05 1999-12-24 Read Rite Smi Kk 磁気抵抗素子と磁気ヘッド
US6018441A (en) 1998-06-08 2000-01-25 Read-Rite Corporation Disk drive pivot bearing and actuator arm assembly
JPH11354860A (ja) 1998-06-10 1999-12-24 Read Rite Smi Kk スピンバルブ磁気変換素子及び磁気ヘッド
US6229782B1 (en) 1998-07-06 2001-05-08 Read-Rite Corporation High numerical aperture optical focusing device for use in data storage systems
US6212153B1 (en) 1998-07-06 2001-04-03 Read-Rite Corporation High NA solid catadioptric focusing device having a flat kinoform phase profile
US6130779A (en) 1998-07-06 2000-10-10 Read-Rite Corporation Near field magneto-optical head made using wafer processing techniques
US6377535B1 (en) 1998-07-06 2002-04-23 Read-Rite Corporation High numerical aperture optical focusing device having a conical incident facet and a parabolic reflector for use in data storage systems
US6175476B1 (en) 1998-08-18 2001-01-16 Read-Rite Corporation Synthetic spin-valve device having high resistivity anti parallel coupling layer
US6445536B1 (en) 1998-08-27 2002-09-03 Read-Rite Corporation Dielectric stencil-defined write head for MR, GMR, and spin valve high density recording heads
JP2000091667A (ja) 1998-09-09 2000-03-31 Read Rite Smi Kk スピンバルブ磁気抵抗センサ及び薄膜磁気ヘッド
US6181525B1 (en) 1998-09-23 2001-01-30 Read-Rite Corporation Read/write head with a limited range of motion relative to a load beam
JP2000113437A (ja) 1998-10-08 2000-04-21 Read Rite Smi Kk 磁気ヘッド装置の製造方法、磁気ヘッド装置、並びに、磁気ヘッド装置の中間製造物
US6330136B1 (en) 1998-10-14 2001-12-11 Read-Rite Corporation Magnetic read sensor with SDT tri-layer and method for making same
US6137661A (en) 1998-10-19 2000-10-24 Read-Rite Corporation System for providing a magnetoresistive head having higher efficiency
US6252743B1 (en) 1998-11-02 2001-06-26 Read-Rite Corporation Read/write positioning arm with interspaced amplifier chips
US6118638A (en) 1998-11-02 2000-09-12 Read-Rite Corporation CPP magnetoresistive device and method for making same
US6333830B2 (en) 1998-11-09 2001-12-25 Read-Rite Corporation Low resistance coil structure for high speed writer
US6198609B1 (en) 1998-11-09 2001-03-06 Read-Rite Corporation CPP Magnetoresistive device with reduced edge effect and method for making same
JP2000149233A (ja) 1998-11-11 2000-05-30 Read Rite Smi Kk 磁気ヘッド装置、並びに、その製造方法
US6160684A (en) 1998-11-12 2000-12-12 Read-Rite Corporation Head suspension having tabs and force isolation welds for gram load reduction during swaging
US6233116B1 (en) 1998-11-13 2001-05-15 Read-Rite Corporation Thin film write head with improved laminated flux carrying structure and method of fabrication
US6452765B1 (en) 1998-11-18 2002-09-17 Read-Rite Corporation CoNbTi as high resistivity SAL material for high-density MR
US6190764B1 (en) 1998-11-23 2001-02-20 Read-Rite Corporation Inductive write head for magnetic data storage media
US6221218B1 (en) 1998-11-23 2001-04-24 Read-Rite Corporation Method of forming an inductive write head for magnetic data storage media
JP2000163713A (ja) 1998-11-27 2000-06-16 Read Rite Smi Kk 薄膜磁気ヘッドの上部磁極層の形成方法、段差を有する表面の段差底部上に高アスペクト比微細ブロックパターンを形成する方法、並びに、薄膜磁気ヘッド
US6633464B2 (en) 1998-12-09 2003-10-14 Read-Rite Corporation Synthetic antiferromagnetic pinned layer with Fe/FeSi/Fe system
US6025988A (en) 1998-12-17 2000-02-15 Read-Rite Corporation Interconnect adapter and head suspension assembly
US6258468B1 (en) 1998-12-22 2001-07-10 Read-Rite Corporation AMR read sensor structure and method with high magnetoresistive coefficient
US6204999B1 (en) 1998-12-23 2001-03-20 Read-Rite Corporation Method and system for providing a write head having a conforming pole structure
US6462920B1 (en) 1998-12-23 2002-10-08 Read-Rite Corporation Method and system for reducing MR head instability
US6222707B1 (en) 1998-12-28 2001-04-24 Read-Rite Corporation Bottom or dual spin valve having a seed layer that results in an improved antiferromagnetic layer
US6215625B1 (en) 1999-01-04 2001-04-10 Read-Rite Corporation Apparatus and method for adhesive bridge suspension attachment
US6185077B1 (en) 1999-01-06 2001-02-06 Read-Rite Corporation Spin valve sensor with antiferromagnetic and magnetostatically coupled pinning structure
JP2000207714A (ja) 1999-01-13 2000-07-28 Read Rite Smi Kk 磁気抵抗効果型薄膜磁気ヘッド、並びに、その製造方法
US6418000B1 (en) 1999-01-21 2002-07-09 Read-Rite Corporation Dual, synthetic spin valve sensor using current pinning
US6277505B1 (en) 1999-01-21 2001-08-21 Read-Rite Corporation Read sensor with improved thermal stability and manufacturing method therefor
US6094803A (en) 1999-01-21 2000-08-01 Read-Rite Corporation Wafer processing techniques for near field magneto-optical head
JP2000222709A (ja) 1999-02-01 2000-08-11 Read Rite Smi Kk スピンバルブ磁気抵抗センサ及び薄膜磁気ヘッド
US6351355B1 (en) 1999-02-09 2002-02-26 Read-Rite Corporation Spin valve device with improved thermal stability
US6801411B1 (en) 1999-02-10 2004-10-05 Western Digital (Fremont), Inc. Dual stripe spin valve sensor without antiferromagnetic pinning layer
US6629357B1 (en) 1999-02-10 2003-10-07 Read-Rite Smi Corp. Method of magnetic head manufacture
US6178070B1 (en) 1999-02-11 2001-01-23 Read-Rite Corporation Magnetic write head and method for making same
US6016290A (en) 1999-02-12 2000-01-18 Read-Rite Corporation Read/write head with shifted waveguide
US6404706B1 (en) 1999-02-12 2002-06-11 Read-Rite Corporation Laser mounting for a thermally assisted GMR head
JP2000251223A (ja) 1999-02-23 2000-09-14 Read Rite Smi Kk スピンバルブ磁気抵抗センサ及び薄膜磁気ヘッド
US6134089A (en) 1999-03-11 2000-10-17 Read-Rite Corporation Current perpendicular to plane magnetoresistive device with low resistance lead
US6765756B1 (en) 1999-03-12 2004-07-20 Western Digital (Fremont), Inc. Ultra-short yoke and ultra-low stack height writer and method of fabrication
US6691226B1 (en) 1999-03-16 2004-02-10 Western Digital Ventures, Inc. Computer system with disk drive having private key validation means for enabling features
US6532823B1 (en) 1999-03-18 2003-03-18 Read-Rite Corporation Insulator layers for magnetoresistive transducers
US6198608B1 (en) 1999-03-18 2001-03-06 Read-Rite Corporation MR sensor with blunt contiguous junction and slow-milling-rate read gap
US6417998B1 (en) 1999-03-23 2002-07-09 Read-Rite Corporation Ultra small advanced write transducer and method for making same
US6297955B1 (en) 1999-03-31 2001-10-02 Western Digital Ventures, Inc. Host assembly for an integrated computer module
US6411522B1 (en) 1999-04-01 2002-06-25 Western Digital Ventures, Inc. Integrated computer module with EMI shielding plate
US6445553B2 (en) 1999-04-02 2002-09-03 Read-Rite Corporation Method and system for fabricating a high density magnetoresistive device
US6201673B1 (en) 1999-04-02 2001-03-13 Read-Rite Corporation System for biasing a synthetic free layer in a magnetoresistance sensor
US6359779B1 (en) 1999-04-05 2002-03-19 Western Digital Ventures, Inc. Integrated computer module with airflow accelerator
US6282056B1 (en) 1999-04-08 2001-08-28 Read-Rite Corporation Tapered stitch pole writer for high density magnetic recording
US6657816B1 (en) 1999-04-09 2003-12-02 Ronald A. Barr Thin film inductive read/write head with a sloped pole
US6490125B1 (en) 1999-04-09 2002-12-03 Read-Rite Corporation Thin film write head with improved yoke to pole stitch
US6654195B1 (en) 1999-04-27 2003-11-25 Western Digital Ventures, Inc. Disk drive having a register set for providing real time position variables to a host
US6944938B1 (en) 1999-05-03 2005-09-20 Western Digital (Fremont), Inc. Method of forming a magnetoresistive device
US6829819B1 (en) 1999-05-03 2004-12-14 Western Digital (Fremont), Inc. Method of forming a magnetoresistive device
JP2000315302A (ja) 1999-05-06 2000-11-14 Read Rite Smi Kk 複合型薄膜磁気ヘッド
US6424505B1 (en) 1999-05-06 2002-07-23 Read-Rite Corporation Method and system for providing electrostatic discharge protection for flex-on suspension, trace-suspension assembly, or cable-on suspension
US6271604B1 (en) 1999-05-10 2001-08-07 Western Digital Corporation Integrated computer module having a data integrity latch
US6349014B1 (en) 1999-05-14 2002-02-19 Read-Rite Corporation Magnetic read/write device with insulated coil layer recessed into pole
US6410170B1 (en) 1999-05-20 2002-06-25 Read-Rite Corporation High resistivity FeXN sputtered films for magnetic storage devices and method of fabrication
US6296955B1 (en) 1999-05-24 2001-10-02 Read-Rite Corporation High moment and high permeability transducer structures and formation
US6400526B2 (en) 1999-05-26 2002-06-04 Read-Rite Corporation Advanced writer for chip-on-load beam
US6193584B1 (en) 1999-05-27 2001-02-27 Read-Rite Corporation Apparatus and method of device stripe height control
US6466401B1 (en) 1999-06-02 2002-10-15 Read-Rite Corporation Thin film write head with interlaced coil winding and method of fabrication
US6762910B1 (en) 1999-06-03 2004-07-13 Western Digital (Fremont), Inc. Data storage and retrieval apparatus with thin film read head having inset extra gap insulation layer and method of fabrication
US6433970B1 (en) 1999-06-07 2002-08-13 Read-Rite Corporation Structure and method for redeposition free thin film CPP read sensor fabrication
US6389499B1 (en) 1999-06-09 2002-05-14 Western Digital Ventures, Inc. Integrated computer module
US6330137B1 (en) 1999-06-11 2001-12-11 Read-Rite Corporation Magnetoresistive read sensor including a carbon barrier layer and method for making same
US6353511B1 (en) 1999-06-15 2002-03-05 Read-Rite Corporation Thin film write head for improved high speed and high density recording
US6469877B1 (en) 1999-06-15 2002-10-22 Read-Rite Corporation Spin valve device with improved exchange layer defined track width and method of fabrication
US6466402B1 (en) 1999-06-18 2002-10-15 Read-Rite Corporation Compact MR write structure
US6310746B1 (en) 1999-06-23 2001-10-30 Read-Rite Corporation Piezoelectric vibration damping for disk drives
US6185051B1 (en) 1999-06-23 2001-02-06 Read-Rite Corporation High numerical aperture optical focusing device for use in data storage systems
US6181485B1 (en) 1999-06-23 2001-01-30 Read-Rite Corporation High numerical aperture optical focusing device for use in data storage systems
US6185081B1 (en) 1999-06-30 2001-02-06 Read-Rite Corporation Bias layers which are formed on underlayers promoting in-plane alignment of the c-axis of cobalt used in magnetoresistive transducers
US7027268B1 (en) 1999-07-08 2006-04-11 Western Digital (Fremont), Inc. Method and system for providing a dual spin filter
US6687098B1 (en) 1999-07-08 2004-02-03 Western Digital (Fremont), Inc. Top spin valve with improved seed layer
US6483662B1 (en) 1999-07-09 2002-11-19 Read-Rite Corporation High density multi-coil magnetic write head having a reduced yoke length and short flux rise time
US7196880B1 (en) 1999-07-19 2007-03-27 Western Digital (Fremont), Inc. Spin valve sensor having a nonmagnetic enhancement layer adjacent an ultra thin free layer
US6304414B1 (en) 1999-07-20 2001-10-16 Read-Rite Corporation Thin film magnetic write head having an ultra-low stack height
US6611398B1 (en) 1999-08-09 2003-08-26 Quantum Corporation Tape head with support bars
US6369983B1 (en) 1999-08-13 2002-04-09 Read-Rite Corporation Write head having a dry-etchable antireflective intermediate layer
US6396660B1 (en) 1999-08-23 2002-05-28 Read-Rite Corporation Magnetic write element having a thermally dissipative structure
US6317290B1 (en) 1999-08-31 2001-11-13 Read-Rite Corporation Advance pole trim writer with moment P1 and low apex angle
US6381095B1 (en) 1999-08-31 2002-04-30 Read-Rite Corporation High performance thin film magnetic write element having high Bsat poles and method for making same
US6452742B1 (en) 1999-09-02 2002-09-17 Read-Rite Corporation Thin film write having reduced resistance conductor coil partially recessed within middle coat insulation
US6496330B1 (en) 1999-09-09 2002-12-17 Read-Rite Corporation Magnetic write head having a splitcoil structure
US6421212B1 (en) 1999-09-21 2002-07-16 Read-Rite Corporation Thin film read head structure with improved bias magnet-to-magnetoresistive element interface and method of fabrication
US6356412B1 (en) 1999-09-30 2002-03-12 Read-Rite Corporation Air bearing facilitating load/unload of a magnetic read/write head
US6317297B1 (en) 1999-10-06 2001-11-13 Read-Rite Corporation Current pinned dual spin valve with synthetic pinned layers
US6310750B1 (en) 1999-10-20 2001-10-30 Read-Rite Corporation Disk drive actuator arm with microactuated read/write head positioning
US6381105B1 (en) 1999-10-22 2002-04-30 Read-Rite Corporation Hybrid dual spin valve sensor and method for making same
JP2001126219A (ja) 1999-10-28 2001-05-11 Read Rite Corp スピンバルブ型磁気抵抗センサ及び薄膜磁気ヘッド
US6448765B1 (en) 1999-10-28 2002-09-10 Read-Rite Corporation Microscopic tips having stable magnetic moments and disposed on cantilevers for sensing magnetic characteristics of adjacent structures
US6456465B1 (en) 1999-11-09 2002-09-24 Read-Rite Corporation Vertical giant magnetoresistance sensor using a recessed shield
US6661621B1 (en) 1999-11-19 2003-12-09 Read-Rite Smi Corp. Compound thin film magnetic head
US6447935B1 (en) 1999-11-23 2002-09-10 Read-Rite Corporation Method and system for reducing assymetry in a spin valve having a synthetic pinned layer
US6479096B1 (en) 1999-12-03 2002-11-12 Read-Rite Corporation Method for manufacturing a GMR spin valve having a smooth interface between magnetic and non-magnetic layers
US6650506B1 (en) 1999-12-15 2003-11-18 Patrick Risse Double-sided disk storage using a single configuration of magnetoresistive head
US6437945B1 (en) 1999-12-28 2002-08-20 Read-Rite Corporation Airflow assisted ramp loading and unloading of sliders in hard disk drives
US7046490B1 (en) 2000-01-06 2006-05-16 Western Digital (Fremont), Inc. Spin valve magnetoresistance sensor and thin film magnetic head
US6404601B1 (en) 2000-01-25 2002-06-11 Read-Rite Corporation Merged write head with magnetically isolated poletip
US7042810B2 (en) 2000-01-31 2006-05-09 Kabushiki Kaisha Toshiba Thermally-assisted magnetic recording head, method of manufacturing the same, and thermally-assisted magnetic recording apparatus
US6963530B1 (en) 2000-02-01 2005-11-08 Research Investment Network, Inc. Near-field optical head system with integrated slider and laser
US6937637B1 (en) 2000-02-01 2005-08-30 Research Investment Network, Inc. Semiconductor laser and associated drive circuit substrate
US6417999B1 (en) 2000-02-04 2002-07-09 Read-Rite Corporation Magnetoresistive head stabilized structure and method of fabrication thereof
US7023658B1 (en) 2000-02-08 2006-04-04 Western Digital (Fremont), Inc. Submicron track-width pole-tips for electromagnetic transducers
US6721149B1 (en) 2000-02-11 2004-04-13 Western Digital (Fremont), Inc. Tunneling magnetoresistance spin-valve read sensor with LaNiO3 spacer
US6724569B1 (en) 2000-02-16 2004-04-20 Western Digital (Fremont), Inc. Thin film writer with multiplayer write gap
US6433965B1 (en) 2000-03-02 2002-08-13 Read-Rite Corporation Laminated carbon-containing overcoats for information storage system transducers
US6445542B1 (en) 2000-03-06 2002-09-03 Read-Rite Corporation Air bearing slider
US7059868B1 (en) 2000-03-07 2006-06-13 Western Digital (Fremont), Inc. Connection of trace circuitry in a computer disk drive system
US6445554B1 (en) 2000-03-10 2002-09-03 Read-Rite Corporation Method and system for providing edge-junction TMR for high areal density magnetic recording
US6353318B1 (en) 2000-03-10 2002-03-05 Read-Rite Corporation Magnetoresistive sensor having hard biased current perpendicular to the plane sensor
JP2001308411A (ja) 2000-04-11 2001-11-02 Read Rite Corp スピンバルブ型磁気抵抗センサおよび薄膜磁気ヘッド
US6433968B1 (en) 2000-05-02 2002-08-13 Read-Rite Corporation Merged read/write head and method of fabricating same
US6552874B1 (en) 2000-05-17 2003-04-22 Read-Rite Corporation Shared pole magnetic read-write head for achieving optimized erase band width and method of fabricating the same
US6496334B1 (en) 2000-05-26 2002-12-17 Read-Rite Corportion Data storage and retrieval apparatus with thin film read head having planarized extra gap and shield layers and method of fabrication thereof
US6700759B1 (en) 2000-06-02 2004-03-02 Western Digital (Fremont), Inc. Narrow track width magnetoresistive sensor and method of making
US6674610B1 (en) 2000-06-16 2004-01-06 Western Digital (Fremont), Inc. Thin film write head with universal coil design
US6515573B1 (en) 2000-06-19 2003-02-04 Read-Rite Corporation Method and system for providing edge-junction TMR utilizing a hard magnet as a pinned layer
US6430806B1 (en) 2000-06-23 2002-08-13 Read-Rite Corporation Method for manufacturing an inductive write element employing bi-layer photoresist to define a thin high moment pole pedestal
US6512657B2 (en) 2000-07-17 2003-01-28 Read-Rite Corporation Head suspension having gram load change reduction and method of assembly
US6618223B1 (en) 2000-07-18 2003-09-09 Read-Rite Corporation High speed, high areal density inductive writer
US6512661B1 (en) 2000-08-10 2003-01-28 Read-Rite Corporation Vertical giant magnetoresistance sensor utilizing an insulating bias layer
US6859997B1 (en) 2000-09-19 2005-03-01 Western Digital (Fremont), Inc. Method for manufacturing a magnetic write element
US6989962B1 (en) 2000-09-26 2006-01-24 Western Digital (Fremont), Inc. Inductive write head having high magnetic moment poles and low magnetic moment thin layer in the back gap, and methods for making
US6801408B1 (en) 2000-11-02 2004-10-05 Western Digital (Fremont), Inc. Data storage and retrieval apparatus with thin film read head having a planar sensor element and an extra gap and method of fabrication thereof
US6807332B1 (en) 2000-11-06 2004-10-19 Western Digital (Fremont), Inc. Piezoelectric actuated optical switch
US6958885B1 (en) 2000-12-21 2005-10-25 Western Digital (Fremont), Inc. Insulation layer structure for inductive write heads and method of fabrication
US6807131B1 (en) 2000-12-27 2004-10-19 Research Investment Network, Inc. Near-field hybrid magnetic-optical head system
US6785955B1 (en) 2001-01-23 2004-09-07 Western Digital (Fremont), Inc. Method for providing pedestal-defined zero throat writer
US6577470B1 (en) 2001-01-25 2003-06-10 Read-Rite Corporation Method and system for providing a tape head subassembly structure having an integrated wear bar and outrigger rail
US6661625B1 (en) 2001-02-20 2003-12-09 Kyusik Sin Spin-dependent tunneling sensor with low resistance metal oxide tunnel barrier
US6721203B1 (en) 2001-02-23 2004-04-13 Western Digital (Fremont), Inc. Designs of reference cells for magnetic tunnel junction (MTJ) MRAM
US6803615B1 (en) 2001-02-23 2004-10-12 Western Digital (Fremont), Inc. Magnetic tunnel junction MRAM with improved stability
US6873547B1 (en) 2001-02-23 2005-03-29 Read Rite Corporation High capacity MRAM memory array architecture
US6552928B1 (en) 2001-02-23 2003-04-22 Read-Rite Corporation Read-write control circuit for magnetic tunnel junction MRAM
US6888184B1 (en) 2001-02-23 2005-05-03 Western Digital (Fremont), Inc. Shielded magnetic ram cells
US6687178B1 (en) 2001-02-23 2004-02-03 Western Digital (Fremont), Inc. Temperature dependent write current source for magnetic tunnel junction MRAM
US6700738B1 (en) 2001-03-16 2004-03-02 Kyusik Sin Read/write head coil tap having upper and lower portions
JP3903365B2 (ja) 2001-03-29 2007-04-11 株式会社東芝 光アシスト磁気記録ヘッド及び光アシスト磁気記録装置
US7289303B1 (en) 2001-04-05 2007-10-30 Western Digital (Fremont), Llc Spin valve sensors having synthetic antiferromagnet for longitudinal bias
US6829160B1 (en) 2001-04-06 2004-12-07 Western Digital (Fremont), Inc. Magnetic ram cell with amplification circuitry and MRAM memory array formed using the MRAM cells
US6515791B1 (en) 2001-04-06 2003-02-04 Read-Rite Corporation Active reflection and anti-reflection optical switch
US6760196B1 (en) 2001-12-12 2004-07-06 Western Digital, Inc. Microactuator with offsetting hinges and method for high-resolution positioning of magnetic read/write head
US6376964B1 (en) 2001-05-16 2002-04-23 Read-Rite Corporation Collocated rotating flexure microactuator for dual-stage servo in disk drives
US6704158B2 (en) 2001-06-05 2004-03-09 Western Digital (Fremont), Inc. Shear mode multilayered collocated micro-actuator for dual-stage servo controllers in disk drives
US6870712B2 (en) 2001-06-05 2005-03-22 Western Digital (Fremont), Inc. Inductive writer with flat top pole and pedestal defined zero throat
US6798616B1 (en) 2001-07-10 2004-09-28 Western Digital (Fremont), Inc. Write head architecture for improved manufacturability
US7349179B1 (en) 2001-07-16 2008-03-25 Western Digital (Fremont), Llc Write head for improved manufacturability larger write field and reduced adjacent track erasure
US6683763B1 (en) 2001-08-15 2004-01-27 Western Digital (Fremont), Inc. Method and system for providing a self-aligned electrical contact for a TMR element
US6418048B1 (en) 2001-08-15 2002-07-09 Read-Rite Corporation Spin-dependent tunneling sensor suitable for a magnetic memory
US6512690B1 (en) 2001-08-15 2003-01-28 Read-Rite Corporation High sensitivity common source amplifier MRAM cell, memory array and read/write scheme
US6809899B1 (en) 2001-08-20 2004-10-26 Western Digital (Fremont), Inc. Magnetic heads for perpendicular recording with trapezoidal pole tips
US7027274B1 (en) 2001-08-30 2006-04-11 Western Digital (Fremont), Inc. Spin-dependent tunneling read/write sensor for hard disk drives
US6791793B1 (en) 2001-09-14 2004-09-14 Western Digital (Fremont), Inc. Perpendicular recording write head having a recessed magnetic adjunct pole and method of making the same
US6816345B1 (en) 2001-09-24 2004-11-09 Western Digital (Fremont), Inc. Magnetoresistive sensors having submicron track widths and method of making
US6754049B1 (en) 2001-10-16 2004-06-22 Western Digital (Fremont), Inc. Transducers for perpendicular recording with inductive cancellation at MR sensor
US6987643B1 (en) 2001-10-23 2006-01-17 Western Digital (Fremont), Inc. Pole structure to relieve adjacent track writing
US6721138B1 (en) 2001-10-24 2004-04-13 Western Digital (Fremont), Inc. Inductive transducer with stitched pole tip and pedestal defining zero throat height
US7054113B1 (en) 2001-10-25 2006-05-30 Western Digital (Fremont), Inc. Reader/writer for magnetic memory
US6583968B1 (en) 2001-10-31 2003-06-24 Western Digital Technologies, Inc. Spindle motor hub having equivalent MR read element bias voltage to mitigate potential between disk and MR read element
US6961221B1 (en) 2001-12-18 2005-11-01 Western Digital (Fremont), Inc. Piezoelectric microactuators with substantially fixed axis of rotation and magnified stroke
US6807030B1 (en) 2001-12-18 2004-10-19 Western Digital (Fremont), Inc. Enclosed piezoelectric microactuators coupled between head and suspension
US6737281B1 (en) 2002-01-08 2004-05-18 Western Digital (Fremont), Inc. Method of making transducer with inorganic nonferromagnetic apex region
US6751055B1 (en) 2002-01-08 2004-06-15 Western Digital (Fremont), Inc. Inductive transducer with reduced pole tip protrusion
US6747301B1 (en) 2002-02-06 2004-06-08 Western Digital (Fremont), Inc. Spin dependent tunneling barriers formed with a magnetic alloy
US6639291B1 (en) 2002-02-06 2003-10-28 Western Digital (Fremont), Inc. Spin dependent tunneling barriers doped with magnetic particles
US7336443B2 (en) 2002-02-27 2008-02-26 Seagate Technology Llc Slider for a data storage device with a floating transducer body and method of fabrication therefor
US6724572B1 (en) 2002-02-28 2004-04-20 Western Digital, Inc. Inductive transducer with recessed leading pole layer
US7307814B1 (en) 2002-03-01 2007-12-11 Western Digital (Fremont), Llc Pedestal defined zero throat writer having a recessed pedestal
CN100583578C (zh) 2002-03-08 2010-01-20 夏普株式会社 光源装置及使用该光源装置的光通信模块
US7035046B1 (en) 2002-03-19 2006-04-25 Western Digital (Fremont), Inc. System and method for minimizing thermal pole tip protrusion
US6757140B1 (en) 2002-03-19 2004-06-29 Western Digital, Inc. Electrostatic microelectromechanical (MEM) microactuator for precise read/write head positioning
US6859343B1 (en) 2002-03-19 2005-02-22 Western Digital, Inc. Hybrid diffuser for minimizing thermal pole tip protrusion and reader sensor temperature
US6873494B2 (en) 2002-04-29 2005-03-29 Western Digital (Fremont), Inc. Write head with high moment film layer having tapered portion extending beyond write gap layer
US7522377B1 (en) 2002-05-01 2009-04-21 Western Digital (Fremont), Llc Magnetic write head with high moment magnetic thin film formed over seed layer
US6778358B1 (en) 2002-05-01 2004-08-17 Western Digital (Fremont), Inc. Magnetically soft, high saturation magnetization laminates of iron-cobalt-nitrogen and iron-nickel
US6744608B1 (en) 2002-05-14 2004-06-01 Western Digital (Fremont), Inc. Method and system for making TMR junctions
US6942824B1 (en) 2002-05-22 2005-09-13 Western Digital (Fremont), Inc. UV curable and electrically conductive adhesive for bonding magnetic disk drive components
US6909578B1 (en) 2002-05-30 2005-06-21 Western Digital (Fremont), Inc. Method and system for reducing thermal pole tip protrusion
US7133253B1 (en) 2002-06-03 2006-11-07 Western Digital (Fremont), Inc. Pole tip with sides flared at media-facing surface
US6806035B1 (en) 2002-06-25 2004-10-19 Western Digital (Fremont), Inc. Wafer serialization manufacturing process for read/write heads using photolithography and selective reactive ion etching
US6861937B1 (en) 2002-06-25 2005-03-01 Western Digital (Fremont), Inc. Double winding twin coil for thin-film head writer
US7412143B2 (en) 2002-06-28 2008-08-12 Seagate Technology Llc Heat assisted magnetic recording with heat profile shaping
CN1666298B (zh) 2002-06-28 2010-05-05 希捷科技有限公司 形成光能小点的装置和方法
US6707083B1 (en) 2002-07-09 2004-03-16 Western Digital (Fremont), Inc. Magnetic tunneling junction with improved power consumption
US6680863B1 (en) 2002-07-09 2004-01-20 Western Digital (Fremont), Inc. MRAM memory array having merged word lines
US6713801B1 (en) 2002-07-09 2004-03-30 Western Digital (Fremont), Inc. α-tantalum lead for use with magnetic tunneling junctions
US6975486B2 (en) 2002-08-06 2005-12-13 Western Digital (Fremont), Inc. Thin film write head having a laminated, flat top pole with bottom shaper and method of fabrication
US6912106B1 (en) 2002-08-06 2005-06-28 Western Digital (Fremont), Inc. Writer with a hot seed zero throat and substantially flat top pole
US6894871B2 (en) 2002-08-07 2005-05-17 Western Digital (Fremont), Inc. Technique for reducing pole tip protrusion in a magnetic write head and GMR stripe temperature in an associated read head structure utilizing one or more internal diffuser regions
US6879464B2 (en) 2002-08-16 2005-04-12 Western Digital (Fremont), Inc. Air bearing having a cavity patch surface coplanar with a leading edge pad surface
US7211339B1 (en) 2002-08-22 2007-05-01 Western Digital (Fremont), Inc. Highly conductive lead adjoining MR stripe and extending beyond stripe height at junction
US6989972B1 (en) 2002-09-30 2006-01-24 Western Digital (Fremont), Inc. Magnetoresistive sensor with overlapping leads having distributed current
US6934129B1 (en) 2002-09-30 2005-08-23 Western Digital (Fremont), Inc. Magnetoresistive sensor with overlapping lead layers including alpha tantalum and conductive layers
US6940688B2 (en) 2002-10-21 2005-09-06 Western Digital (Fremont), Inc. Coil inductive writer having a low inductance and short yoke length
US6950266B1 (en) 2002-10-28 2005-09-27 Western Digital (Fremont), Inc. Active fly height control crown actuator
US6891702B1 (en) 2002-10-31 2005-05-10 Western Digital Technologies, Inc. Method and devices for providing magnetoresistive heads with protection from electrostatic discharge and electric overstress events
US7113366B1 (en) 2002-11-07 2006-09-26 Western Digital (Fremont), Inc. Double-nosed inductive transducer with reduced off-track writing
US6859346B1 (en) 2002-11-07 2005-02-22 Dallas W. Meyer Integrated bidirectional Recording head micropositioner for magnetic storage devices
US7116517B1 (en) 2002-12-18 2006-10-03 Western Digital (Fremont), Inc. Stitched pole write element with a T-shaped pole tip portion
US7057857B1 (en) 2002-12-20 2006-06-06 Western Digital (Fremont), Inc. Dimple pivot post for a rotary co-located microactuator
US6888704B1 (en) 2003-01-22 2005-05-03 Western Digital (Fremont), Inc. Method and system for providing high sensitivity giant magnetoresistive sensors
US6943993B2 (en) 2003-02-11 2005-09-13 Western Digital (Fremont), Inc. Magnetic recording head with a side shield structure for controlling side reading of thin film read sensor
US7006327B2 (en) 2003-02-27 2006-02-28 Western Digital (Fremont), Inc. Thin film recording head with a buried coil providing a shortened yoke and improved dimension control
US7286329B1 (en) 2003-04-02 2007-10-23 Western Digital (Fremont), Llc GMR sensor with shallow contiguous junction and bias layers aligned with free sensor layers
US20050031278A1 (en) 2003-05-16 2005-02-10 Xiaolei Shi Near-field sub-wavelength apertures
US7203387B2 (en) 2003-09-10 2007-04-10 Agency For Science, Technology And Research VLSI-photonic heterogeneous integration by wafer bonding
JP2007510302A (ja) 2003-10-31 2007-04-19 ブッカム テクノロジー ピーエルシー 容易に酸化する半導体材料中に回折格子を製造する方法
US7012832B1 (en) 2003-10-31 2006-03-14 Western Digital (Fremont), Inc. Magnetic memory cell with plural read transistors
US7126788B1 (en) 2003-11-26 2006-10-24 Western Digital (Fremont), Inc. Trailing edge recording magnetic head with reversed double bias coil and deflection pole for perpendicular recording with a non-perpendicular write field
US7126790B1 (en) 2003-11-26 2006-10-24 Western Digital (Fremont), Inc. Magnetic head for perpendicular recording with magnetic loop providing non-perpendicular write field
US8104166B1 (en) 2003-12-19 2012-01-31 Western Digital (Fremont), Llc Self-aligned method for fabricating a high density GMR read element
US7310204B1 (en) 2003-12-19 2007-12-18 Western Digital (Fremont), Llc Inductive writer design for using a soft magnetic pedestal having a high magnetic saturation layer
US7239478B1 (en) 2004-01-31 2007-07-03 Western Digital (Fremont), Inc. Write element for perpendicular recording in a data storage system
US7342752B1 (en) 2004-01-31 2008-03-11 Western Digital (Fremont), Llc Magnetoresistive read head having a bias structure with at least one dusting layer
US7248433B1 (en) 2004-02-02 2007-07-24 Western Digital (Fremont), Inc. Magnetic head with stitched top pole layer and single layer coil or solenoidal coil
US7199974B1 (en) 2004-02-02 2007-04-03 Western Digital (Fremont), Inc. Read/write head with reduced pole tip protrusion
US7639457B1 (en) 2004-02-27 2009-12-29 Western Digital (Fremont), Llc Magnetic sensor with underlayers promoting high-coercivity, in-plane bias layers
US7212384B1 (en) 2004-02-27 2007-05-01 Western Digital (Fremont), Inc. Magnetic read head with recessed hard bias and current leads
US7292409B1 (en) 2004-02-27 2007-11-06 Western Digital (Fremont), Llc Magnetic head with thin trailing pedestal layer
US7248449B1 (en) 2004-03-31 2007-07-24 Western Digital (Fremont), Inc. Magnetoresistive read sensor with reduced effective shield-to-shield spacing
US7333295B1 (en) 2004-03-31 2008-02-19 Western Digital (Fremont), Llc Magnetic recording head with high saturation magnetic flux density CoNiFe thin film composition
US8670211B1 (en) 2004-03-31 2014-03-11 Western Digital (Fremont), Llc Method and system for providing high magnetic flux saturation CoFe films
US7280325B1 (en) 2004-03-31 2007-10-09 Western Digital (Fremont), Llc Ferromagnetic structure including a first section separated from a ferromagnetic layer by an electrically conductive nonmagnetic spacer and a second section elongated relative to the first section in at least one dimension
US7110289B1 (en) 2004-03-31 2006-09-19 Western Digital (Fremont), Inc. Method and system for controlling MRAM write current to reduce power consumption
US6934113B1 (en) 2004-03-31 2005-08-23 Western Digital (Fremont), Inc. Method and system for providing dynamic actuation of a write head using a strain element
US7193815B1 (en) 2004-04-06 2007-03-20 Western Digital (Fremont), Inc. Shielded pole magnetic head for perpendicular recording
US7672086B1 (en) 2004-04-28 2010-03-02 Western Digital (Fremont), Llc Method and system for providing a magnetic element having a current confined layer
US7307818B1 (en) 2004-04-30 2007-12-11 Western Digital (Fremont), Llc Method and system for providing a stable spin filter
US7660080B1 (en) 2004-04-30 2010-02-09 Western Digital (Fremont), Llc Read/write head with dynamic flying height control by magnetostriction
US7248431B1 (en) 2004-04-30 2007-07-24 Yinshi Liu Method of fabricating a perpendicular recording write head having a gap with two portions
US7199975B1 (en) 2004-05-15 2007-04-03 Western Digital (Fremont), Inc. Magnetic head for perpendicular recording with hard bias structure for write pole tip
US7092195B1 (en) 2004-05-28 2006-08-15 Western Digital (Fremont), Inc. Method of using a magnetic write head having an internal heater
US7272079B2 (en) 2004-06-23 2007-09-18 Seagate Technology Llc Transducer for heat assisted magnetic recording
US7522379B1 (en) 2004-07-30 2009-04-21 Western Digital (Fremont), Llc Write element with recessed pole and heat sink layer for ultra-high density writing
US7379269B1 (en) 2004-07-30 2008-05-27 Western Digital (Fremont), Llc Write element with reduced yoke length for ultra-high density writing
US7238292B1 (en) 2004-07-30 2007-07-03 Western Digital (Fremont), Inc. Method of fabricating a write element with a reduced yoke length
US7318947B1 (en) 2004-08-31 2008-01-15 Western Digital (Fremont), Llc Method and apparatus for controlling magnetostriction in a spin valve sensor
US7170725B1 (en) 2004-09-01 2007-01-30 Western Digital (Fremont), Inc. Magnetic sensor having an aluminum-nitride seed layer for an anti-ferromagnetic layer
US7595967B1 (en) 2004-09-07 2009-09-29 Western Digital (Fremont), Llp Method for fabricating a spacer layer for a magnetoresistive element
US7296339B1 (en) 2004-09-08 2007-11-20 Western Digital (Fremont), Llc Method for manufacturing a perpendicular magnetic recording head
US7124654B1 (en) 2004-09-30 2006-10-24 Western Digital (Fremont), Inc. Method for determining a microactuator range of movement
US7131346B1 (en) 2004-10-15 2006-11-07 Western Digital (Fremont), Inc. Spin stand testing system with fine positioner for head stack assembly
US7041985B1 (en) 2004-11-12 2006-05-09 Western Digital (Fremont), Inc. Manipulator for microscopy sample preparation and methods for making and use thereof
US7284316B1 (en) 2004-11-17 2007-10-23 Western Digital (Fremont), Llc Method for forming a hard bias structure in a magnetoresistive sensor
US7483229B2 (en) 2004-12-08 2009-01-27 Seagate Technology Llc Optical coupling to data recording transducer
US7521137B2 (en) 2005-01-12 2009-04-21 Seagate Technology Llc Patterned thin films and use of such films as thermal control layers in heat assisted magnetic recording media
US7428124B1 (en) 2005-01-18 2008-09-23 Western Digital (Fremont), Llc Magnetic recording head with resistive heating element and thermal barrier layer
US7430098B1 (en) 2005-01-18 2008-09-30 Western Digital (Fremont), Llc Perpendicular magnetic recording head with dynamic flying height heating element
US7372665B1 (en) 2005-01-18 2008-05-13 Western Digital (Fremont), Llc Magnetic recording head with resistive heating element located near the write coil
US7365941B2 (en) 2005-01-24 2008-04-29 Hitachi Global Storage Technologies Netherlands, B.V. Optical recording head including an optical resonant cavity
US7819979B1 (en) 2005-01-31 2010-10-26 Western Digital (Fremont), Llc Method and system for cleaning magnetic artifacts using a carbonyl reactive ion etch
US7444740B1 (en) 2005-01-31 2008-11-04 Western Digital (Fremont), Llc Damascene process for fabricating poles in recording heads
US7363697B1 (en) 2005-02-18 2008-04-29 Western Digital (Fremont), Llc Method for manufacturing a group of head gimbal assemblies
US6969989B1 (en) 2005-03-11 2005-11-29 Western Digital (Fremont), Inc. Method for characterizing a perpendicular recording head writing pole
US7773330B2 (en) 2005-04-15 2010-08-10 Seagate Technology Llc Apparatus for excitation, enhancement, and confinement of surface electromagnetic waves for confined optical power delivery
US7417832B1 (en) 2005-04-26 2008-08-26 Western Digital (Fremont), Llc Magnetoresistive structure having a novel specular and filter layer combination
US7869160B1 (en) 2005-04-27 2011-01-11 Western Digital (Fremont), Llc Perpendicular recording head with shaped pole surfaces for higher linear data densities
US7552523B1 (en) 2005-07-01 2009-06-30 Western Digital (Fremont), Llc Method for manufacturing a perpendicular magnetic recording transducer
US7554767B1 (en) 2005-07-01 2009-06-30 Western Digital (Fremont), Llc Electrical lapping guide disposed laterally relative to a shield pedestal
US7551406B1 (en) 2005-07-01 2009-06-23 Western Digital (Fremont), Llc Dual electrical lapping guides with common bonding pad
US8333008B1 (en) 2005-07-29 2012-12-18 Western Digital (Fremont), Llc Method for manufacturing a perpendicular magnetic recording transducer
US8424192B1 (en) 2005-08-08 2013-04-23 Western Digital (Fremont), Llc Method for manufacturing a pole for a magnetic recording head
US7869309B2 (en) 2005-08-11 2011-01-11 Seagate Technology Llc Dual wire integrated WAMR/HAMR writing head
US7522382B1 (en) 2005-08-22 2009-04-21 Western Digital (Fremont), Llc Head stack assembly with interleaved flexure tail bond pad rows
KR100718146B1 (ko) * 2006-01-13 2007-05-14 삼성전자주식회사 열보조 자기기록헤드
US7684160B1 (en) 2006-02-06 2010-03-23 Western Digital (Fremont), Llc Magnetoresistive structure having a novel specular and barrier layer combination
US7493688B1 (en) 2006-02-13 2009-02-24 Western Digital (Fremont), Llc Method of manufacturing a magnetic recording transducer
US7419891B1 (en) 2006-02-13 2008-09-02 Western Digital (Fremont), Llc Method and system for providing a smaller critical dimension magnetic element utilizing a single layer mask
US7508627B1 (en) 2006-03-03 2009-03-24 Western Digital (Fremont), Llc Method and system for providing perpendicular magnetic recording transducers
US7542246B1 (en) 2006-04-18 2009-06-02 Western Digital (Fremont), Llc Transducer with pole tip protrusion compensation layer
US7349170B1 (en) 2006-04-28 2008-03-25 Western Digital (Fremont), Llc Method of monitoring operation of a disk drive by analyzing the envelope of a read-back signal in the frequency domain
US8141235B1 (en) 2006-06-09 2012-03-27 Western Digital (Fremont), Llc Method for manufacturing a perpendicular magnetic recording transducers
US7894308B2 (en) 2006-06-27 2011-02-22 Seagate Technology Llc Near-field optical transducers having a tilted metallic pin
US7643248B2 (en) 2006-06-30 2010-01-05 Seagate Technology Llc Optoelectronic emitter mounted on a slider
US7609480B2 (en) 2006-06-30 2009-10-27 Seagate Technology Llc Heat-assisted magnetic recording head
US7672080B1 (en) 2006-09-15 2010-03-02 Western Digital (Fremont), Llc Laminated perpendicular writer head including amorphous metal
US7719795B2 (en) 2006-11-15 2010-05-18 Western Digital (Fremont), Llc Head having a transducer heater and an air bearing surface with a flow-diversion dam and pressure-relief trough disposed upstream of the transducer
US8689430B1 (en) 2006-11-29 2014-04-08 Western Digital (Fremont), Llc Method for providing a perpendicular magnetic recording (PMR)head
US7688546B1 (en) 2006-12-21 2010-03-30 Western Digital (Fremont), Llc Perpendicular magnetic recording head having nonmagnetic insertion layers
US7695761B1 (en) 2006-12-21 2010-04-13 Western Digital (Fremont), Llc Method and system for providing a spin tunneling magnetic element having a crystalline barrier layer
US8308921B1 (en) 2006-12-21 2012-11-13 Western Digital (Fremont), Llc Mask for increased uniformity in ion beam deposition
US7371152B1 (en) 2006-12-22 2008-05-13 Western Digital (Fremont), Llc Non-uniform subaperture polishing
US9135932B2 (en) 2007-01-17 2015-09-15 Seagate Technology Llc Integrated head for heat assisted magnetic recording
US20080218891A1 (en) 2007-03-07 2008-09-11 Seagate Technology Llc Magnetic recording device with an integrated microelectronic device
US7911735B1 (en) 2007-03-09 2011-03-22 Western Digital (Fremont), Llc Perpendicular magnetic recording head utilizing a nonmagnetic underlayer layer
US7911737B1 (en) 2007-03-23 2011-03-22 Western Digital (Fremont), Llc Method and system for providing a PMR head having an antiferromagnetically coupled pole
US8325440B2 (en) 2007-03-26 2012-12-04 Tdk Corporation Magnetic head including a pole layer and an antireflection film sandwiched by two shields
JP4539672B2 (ja) * 2007-03-27 2010-09-08 Ｔｄｋ株式会社 熱アシスト磁気ヘッド、ヘッドジンバルアセンブリ及びハードディスク装置
US7855854B2 (en) 2007-04-17 2010-12-21 Western Digital (Fremont), Llc Head with an air bearing surface having a shallow recessed trailing air flow dam
US7872833B2 (en) 2007-04-17 2011-01-18 Western Digital (Fremont) , LLC Head with a transducer overcoat having a trailing air flow dam that is shallowly recessed from an air bearing surface
US8373945B1 (en) 2007-04-23 2013-02-12 Western Digital (Fremont), Llc Magnetic writer having a split yoke
US8559141B1 (en) 2007-05-07 2013-10-15 Western Digital (Fremont), Llc Spin tunneling magnetic element promoting free layer crystal growth from a barrier layer interface
US8072705B1 (en) 2007-05-11 2011-12-06 Western Digital (Fremont), Llc Method and system for providing a magnetic writer using a BARC
US7736823B1 (en) 2007-05-11 2010-06-15 Western Digital (Fremont), Llc Method and system for providing optical proximity correction for structures such as a PMR nose
US7440220B1 (en) 2007-05-29 2008-10-21 Western Digital (Fremont), Llc Method for defining a touch-down power for head having a flying height actuator
US7436620B1 (en) 2007-05-29 2008-10-14 Western Digital (Fremont), Llc Method for selecting an electrical power to be applied to a head-based flying height actuator
US7872824B1 (en) 2007-06-11 2011-01-18 Western Digital (Fremont), Llc Setting an operating bias current for a magnetoresistive head by computing a target operating voltage
US7389577B1 (en) 2007-06-26 2008-06-24 Western Digital (Fremont), Llc Method to fabricate an ESD resistant tunneling magnetoresistive read transducer
US8357244B1 (en) 2007-06-28 2013-01-22 Western Digital (Fremont), Llc Method for lifting off photoresist beneath an overlayer
US7829264B1 (en) 2007-08-09 2010-11-09 Western Digital (Fremont), Llc Method and system for providing a microelectronic device using a plurality of focus distances
US7846643B1 (en) 2007-11-02 2010-12-07 Western Digital (Fremont), Llc Method and system for providing a structure in a microelectronic device using a chromeless alternating phase shift mask
US8537494B1 (en) 2007-11-06 2013-09-17 Western Digital (Fremont), Llc PMR head with an angled stitch layer
US8015692B1 (en) 2007-11-07 2011-09-13 Western Digital (Fremont), Llc Method for providing a perpendicular magnetic recording (PMR) head
US7583466B2 (en) 2007-11-15 2009-09-01 Western Digital (Fremont), Llc Disk drive determining operating fly height by detecting head disk contact from disk rotation time
US8077434B1 (en) 2007-11-19 2011-12-13 Western Digital (Fremont), Llc Perpendicular magnetic recording head having a recessed magnetic base layer
US7916426B2 (en) 2007-11-30 2011-03-29 Western Digital (Fremont), Llc Head with an air bearing surface having left and right leading pressurizing steps, each with short and long regions
US7785666B1 (en) 2007-12-12 2010-08-31 Western Digital (Fremont), Llc Methods for fabricating a magnetic recording device
US8079135B1 (en) 2007-12-13 2011-12-20 Western Digital (Fremont), Llc Method for providing a perpendicular magnetic recording (PMR) transducer
US8793866B1 (en) 2007-12-19 2014-08-05 Western Digital (Fremont), Llc Method for providing a perpendicular magnetic recording head
US8545999B1 (en) 2008-02-21 2013-10-01 Western Digital (Fremont), Llc Method and system for providing a magnetoresistive structure
US8091210B1 (en) 2008-03-05 2012-01-10 Western Digital (Fremont), Llc Method for providing a structure in magnetic recording transducer
US8179636B1 (en) 2008-03-05 2012-05-15 Western Digital (Fremont), Llc Method and system for providing a perpendicular magnetic recording writer
US8151441B1 (en) 2008-03-27 2012-04-10 Western Digital (Fremont), Llc Method for providing and utilizing an electronic lapping guide in a magnetic recording transducer
US8169473B1 (en) 2008-03-27 2012-05-01 Western Digital (Fremont), Llc Method and system for exposing a photoresist in a magnetic device
US8166632B1 (en) 2008-03-28 2012-05-01 Western Digital (Fremont), Llc Method for providing a perpendicular magnetic recording (PMR) transducer
US8146236B1 (en) 2008-03-28 2012-04-03 Western Digital (Fremont), Llc Method for providing a perpendicular magnetic recording (PMR) transducer
US8163185B1 (en) 2008-03-31 2012-04-24 Western Digital (Fremont), Llc Method and apparatus for lifting off photoresist beneath an overlayer
US8316527B2 (en) 2008-04-01 2012-11-27 Western Digital (Fremont), Llc Method for providing at least one magnetoresistive device
US8136224B1 (en) 2008-05-15 2012-03-20 Western Digital (Fremont), Llc Method and system for providing a perpendicular magnetic recording head utilizing a mask having an undercut line
US8136225B1 (en) 2008-05-15 2012-03-20 Western Digital (Fremont), Llc Method and system for providing a perpendicular magnetic recording head
US8259410B1 (en) 2008-05-23 2012-09-04 Western Digital (Fremont), Llc Method and system for providing a magnetic head using a composite magnetic material in the recording transducer
US8223459B2 (en) 2008-06-12 2012-07-17 Seagate Technology Llc Laser on slider for a heat assisted magnetic recording head
US8270126B1 (en) 2008-06-16 2012-09-18 Western Digital (Fremont), Llc Method and system for providing an improved hard bias structure
US8320076B1 (en) 2008-06-26 2012-11-27 Western Digital (Fremont), Llc Method and system for providing a magnetic recording transducer including an assist pole having surfaces angled with respect to the ABS
US8416540B1 (en) 2008-06-26 2013-04-09 Western Digital (Fremont), Llc Method for defining a magnetoresistive junction using multiple mills at a plurality of angles
US8349195B1 (en) 2008-06-27 2013-01-08 Western Digital (Fremont), Llc Method and system for providing a magnetoresistive structure using undercut free mask
US8228633B1 (en) 2008-08-21 2012-07-24 Western Digital (Fremont), Llc Method and system for providing a magnetic recording transducer having a hybrid moment pole
US8276258B1 (en) 2008-08-26 2012-10-02 Western Digital (Fremont), Llc Method for fabricating a magnetic recording transducer
US8166631B1 (en) 2008-08-27 2012-05-01 Western Digital (Fremont), Llc Method for fabricating a magnetic recording transducer having side shields
US7852587B2 (en) 2008-09-11 2010-12-14 Hitachi Global Storage Technologies Netherlands B.V. Thermal assisted recording (TAR) disk drive capable of controlling the write pulses
US8343319B1 (en) 2008-09-25 2013-01-01 Western Digital (Fremont), Llc Method and system for providing an improved hard bias structure
US8720044B1 (en) 2008-09-26 2014-05-13 Western Digital (Fremont), Llc Method for manufacturing a magnetic recording transducer having side shields
US7796353B2 (en) 2008-10-09 2010-09-14 Hitachi Global Storage Technologies Netherlands B.V. Patterned-media magnetic recording disk with optical contrast enhancement and disk drive using optical contrast for write synchronization
US8334093B2 (en) 2008-10-31 2012-12-18 Western Digital (Fremont), Llc Method and system for providing a perpendicular magnetic recording head
US8248891B2 (en) 2008-11-18 2012-08-21 Seagate Technology Llc Near-field transducers for focusing light
US8136805B1 (en) 2008-11-19 2012-03-20 Western Digital (Fremont), Llc Row bar holder
US8077435B1 (en) 2008-11-20 2011-12-13 Western Digital (Fremont), Llc Current perpendicular-to-plane read sensor with back shield
US8547667B1 (en) 2008-11-26 2013-10-01 Western Digital (Fremont), Llc Method and system for providing a hard bias structure in a magnetic recording transducer
US8018678B1 (en) 2008-11-26 2011-09-13 Western Digital (Fremont), Llc Method for simultaneous electronic lapping guide (ELG) and perpendicular magnetic recording (PMR) pole formation
US8649123B1 (en) 2008-11-26 2014-02-11 Western Digital (Fremont), Llc Method to eliminate reactive ion etching (RIE) loading effects for damascene perpendicular magnetic recording (PMR) fabrication
US8231796B1 (en) 2008-12-09 2012-07-31 Western Digital (Fremont), Llc Method and system for providing a magnetic recording transducer having side shields
US7910267B1 (en) 2008-12-12 2011-03-22 Western Digital (Fremont), Llc Method and system for providing optical proximity correction for structures such as a PMR nose
US8320077B1 (en) 2008-12-15 2012-11-27 Western Digital (Fremont), Llc Method and system for providing a high moment film
US8643980B1 (en) 2008-12-15 2014-02-04 Western Digital (Fremont), Llc Micro-actuator enabling single direction motion of a magnetic disk drive head
US8008912B1 (en) 2008-12-16 2011-08-30 Western Digital (Fremont), Llc Method and system for testing P2 stiffness of a magnetoresistance transducer at the wafer level
US8196285B1 (en) 2008-12-17 2012-06-12 Western Digital (Fremont), Llc Method and system for providing a pole for a perpendicular magnetic recording head using a multi-layer hard mask
US8259539B1 (en) 2008-12-17 2012-09-04 Western Digital (Fremont), Llc Integration of a vertical cavity surface emitting laser (VCSEL) on an energy-assisted magnetic recording (EAMR) head
US8537502B1 (en) 2009-01-30 2013-09-17 Western Digital (Fremont), Llc Method and system for providing a magnetic transducer having improved shield-to-shield spacing
US8404128B1 (en) 2009-02-23 2013-03-26 Western Digital (Fremont), Llc Method and system for providing a perpendicular magnetic recording head
US8097846B1 (en) 2009-02-25 2012-01-17 Western Digital (Fremont), Llc Metrology and 3D reconstruction of devices in a wafer
US8165709B1 (en) 2009-02-26 2012-04-24 Western Digital (Fremont), Llc Four pad self-calibrating electronic lapping guide
US8203800B2 (en) 2009-03-05 2012-06-19 Western Digital (Fremont), Llc Servo design in data storage media
US8262918B1 (en) 2009-03-25 2012-09-11 Western Digital (Fremont), Llc Methods of producing damascene main pole for perpendicular magnetic recording head
US8077418B1 (en) * 2009-03-31 2011-12-13 Western Digital (Fremont), Llc Reducing thermal protrusion of a near field transducer in an energy assisted magnetic recording head
US8315019B1 (en) 2009-03-31 2012-11-20 Western Digital (Fremont), Llc Method and system for providing an improved magnetoresistive structure utilizing an oxidation buffer layer
US7885029B2 (en) 2009-04-14 2011-02-08 Tdk Corporation Thermally-assisted magnetic recording head and thermally-assisted magnetic recording method
US8222599B1 (en) 2009-04-15 2012-07-17 Western Digital (Fremont), Llc Precise metrology with adaptive milling
US8254060B1 (en) 2009-04-17 2012-08-28 Western Digital (Fremont), Llc Straight top main pole for PMR bevel writer
US8200054B1 (en) 2009-04-19 2012-06-12 Western Digital (Fremont), Llc High efficiency grating coupling for light delivery in EAMR
US8400731B1 (en) 2009-04-19 2013-03-19 Western Digital (Fremont), Llc Write head with variable side shield gaps
US7800858B1 (en) 2009-05-04 2010-09-21 Western Digital (Fremont), Llc Differential head integrated touchdown sensors for hard disk drives
US7796356B1 (en) 2009-05-04 2010-09-14 Western Digital (Fremont), Llc Head integrated touchdown sensor for hard disk drives
US20100290157A1 (en) 2009-05-14 2010-11-18 Western Digital (Fremont), Llc Damascene coil processes and structures
US8074345B1 (en) 2009-05-18 2011-12-13 Western Digital (Fremont), Llc Method of measuring a bevel angle in a write head
US8077557B1 (en) 2009-05-19 2011-12-13 Western Digital (Fremont), Llc Multiple aperture VCSEL EAMR heads
US8191237B1 (en) 2009-05-21 2012-06-05 Western Digital (Fremont), Llc Method for providing a structure in a magnetic transducer
US8225488B1 (en) 2009-05-22 2012-07-24 Western Digital (Fremont), Llc Method for providing a perpendicular magnetic recording (PMR) pole
US8227023B1 (en) 2009-05-27 2012-07-24 Western Digital (Fremont), Llc Method and system for fabricating magnetic transducers with improved pinning
US8291743B1 (en) 2009-05-27 2012-10-23 Western Digital (Fremont), Llc Method and system for calibrating an electronic lapping guide for a beveled pole in a magnetic recording transducer
US8443510B1 (en) 2009-05-28 2013-05-21 Western Digital (Fremont), Llc Method for utilizing an electronic lapping guide for a beveled pole in a magnetic recording transducer
US8171618B1 (en) 2009-06-17 2012-05-08 Western Digital (Fremont), Llc Tunable pole trim processes for fabricating trapezoidal perpendicular magnetic recording (PMR) write poles
US8254212B2 (en) * 2009-06-25 2012-08-28 Seagate Technology Llc Integrated heat assisted magnetic recording device
US8381391B2 (en) 2009-06-26 2013-02-26 Western Digital (Fremont), Llc Method for providing a magnetic recording transducer
US8164864B2 (en) 2009-07-16 2012-04-24 Western Digital (Fremont), Llc Method and system for fabricating magnetic transducers with improved pinning
US8498084B1 (en) 2009-07-21 2013-07-30 Western Digital (Fremont), Llc Magnetoresistive sensors having an improved free layer
US8611055B1 (en) 2009-07-31 2013-12-17 Western Digital (Fremont), Llc Magnetic etch-stop layer for magnetoresistive read heads
US8391106B2 (en) * 2009-08-03 2013-03-05 Tdk Corporation Heat-assisted magnetic recording head with laser diode
US8486285B2 (en) 2009-08-20 2013-07-16 Western Digital (Fremont), Llc Damascene write poles produced via full film plating
US8194365B1 (en) 2009-09-03 2012-06-05 Western Digital (Fremont), Llc Method and system for providing a read sensor having a low magnetostriction free layer
US8024748B1 (en) * 2009-09-09 2011-09-20 Western Digital Technologies, Inc. Method and system for coupling a laser with a slider in an energy assisted magnetic recording disk drive
US8449948B2 (en) 2009-09-10 2013-05-28 Western Digital (Fremont), Llc Method and system for corrosion protection of layers in a structure of a magnetic recording transducer
US8233248B1 (en) 2009-09-16 2012-07-31 Western Digital (Fremont), Llc Method and system for providing a magnetic recording transducer using a line hard mask
US8385157B1 (en) 2009-09-30 2013-02-26 Western Digital Technologies, Inc. Method and system for performing EAMR recording at high density using a large thermal spot size
US8307539B1 (en) 2009-09-30 2012-11-13 Western Digital (Fremont), Llc Method for modeling devices in a wafer
US8279719B1 (en) 2009-10-01 2012-10-02 Western Digital (Fremont), Llc Method and system for coupling a laser with a slider in an energy assisted magnetic recording disk drive
US8385158B1 (en) 2009-10-06 2013-02-26 Western Digital (Fremont), Llc Method and system for providing a magnetic recording transducer having a planarized near-field transducer and a sloped pole
US8194366B1 (en) 2009-10-14 2012-06-05 Western Digital (Fremont), Llc TMR read head structures with differential stripe heights
US9202480B2 (en) 2009-10-14 2015-12-01 Western Digital (Fremont), LLC. Double patterning hard mask for damascene perpendicular magnetic recording (PMR) writer
US8107192B2 (en) * 2009-10-23 2012-01-31 Headway Technologies, Inc. Heat-assisted magnetic recording head with laser diode fixed to slider
US8336194B2 (en) 2009-11-03 2012-12-25 Western Digital (Fremont), Llc Method of fabricating a tunneling magnetoresistive (TMR) reader
US8125856B1 (en) 2009-11-05 2012-02-28 Western Digital (Fremont), Llc Method and system for optically coupling a laser with a transducer in an energy assisted magnetic recording disk drive
US8394280B1 (en) 2009-11-06 2013-03-12 Western Digital (Fremont), Llc Resist pattern protection technique for double patterning application
US8164855B1 (en) 2009-11-06 2012-04-24 Western Digital (Fremont), Llc Method and system for providing a write pole in an energy assisted magnetic recording disk drive
US8322023B1 (en) 2009-11-10 2012-12-04 Western Digital (Fremont), Llc Method for providing a wrap-around shield for a magnetic recording transducer
US8116171B1 (en) 2009-11-11 2012-02-14 Western Digital (Fremont), Llc Method and system for providing energy assisted magnetic recording disk drive using a vertical surface emitting laser
US8375564B1 (en) 2009-12-08 2013-02-19 Western Digital (Fremont), Llc Method for fabricating a pole of a magnetic transducer
US8116043B2 (en) 2009-12-09 2012-02-14 Western Digital (Fremont), Llc Method and system for providing a magnetic transducer having an improved read sensor synthetic antiferromagnet
US8264797B2 (en) 2009-12-21 2012-09-11 Western Digital (Fremont), Llc Head gimbal assembly having a radial rotary piezoelectric microactuator between a read head and a flexure tongue
US8277669B1 (en) 2009-12-21 2012-10-02 Western Digital (Fremont), Llc Method and system for providing a perpendicular magnetic recording pole having a leading edge bevel
US8012804B1 (en) * 2009-12-23 2011-09-06 Western Digital (Fremont), Llc Method and system for mounting lasers on energy assisted magnetic recording heads
US8451556B1 (en) 2009-12-23 2013-05-28 Western Digital (Fremont), Llc Method and system for providing a molded capping layer for an energy assisted magnetic recording head
US8134794B1 (en) * 2009-12-23 2012-03-13 Western Digital (Fremont), Llc Method and system for providing an energy assisted magnetic recording head in a wafer packaging configuration
US8532450B1 (en) 2009-12-23 2013-09-10 Western Digital (Fremont), Llc Optical grating and method of manufacture
US7982989B1 (en) 2009-12-23 2011-07-19 Western Digital (Fremont), Llc Method and system for measuring magnetic interference width
US8257597B1 (en) 2010-03-03 2012-09-04 Western Digital (Fremont), Llc Double rie damascene process for nose length control
US8164760B2 (en) 2010-03-11 2012-04-24 Western Digital (Fremont), Llc Method and system for interrogating the thickness of a carbon layer
US8813324B2 (en) 2010-03-24 2014-08-26 Western Digital (Fremont), Llc Method for providing a piezoelectric multilayer
US8607439B1 (en) * 2010-03-31 2013-12-17 Western Digital (Fremont), Llc Method for providing an energy assisted magnetic recording (EAMR) head
US8404129B1 (en) 2010-03-31 2013-03-26 Western Digital (Fremont), Llc Method and system for providing a curved surface in a magnetic recording head
US8456963B1 (en) 2010-04-12 2013-06-04 Western Digital (Fremont), Llc Method and system for an energy assisted magnetic recording head having a suspension-mounted laser
US8341826B1 (en) 2010-04-12 2013-01-01 Western Digital (Fremont), Llc Method for fabricating a magnetic recording transducer using a split seed layer
US8320722B1 (en) 2010-04-13 2012-11-27 Western Digital (Fremont), Llc Non-linear optical grating
US8458892B2 (en) 2010-05-11 2013-06-11 Western Digital (Fremont), Llc Method for providing a perpendicular magnetic recording transducer using a low energy mill
US8409453B1 (en) 2010-05-12 2013-04-02 Western Digital (Fremont), Llc Method and system for providing a wrap-around shield using a patterned seed layer
US8422841B1 (en) 2010-05-13 2013-04-16 Western Digital (Fremont), Llc Double optical grating
US8625941B1 (en) 2010-05-20 2014-01-07 Western Digital (Fremont), Llc Broadband reflective waveguide metal gratings and their formation
US8375565B2 (en) 2010-05-28 2013-02-19 Western Digital (Fremont), Llc Method for providing an electronic lapping guide corresponding to a near-field transducer of an energy assisted magnetic recording transducer
US8351307B1 (en) 2010-06-04 2013-01-08 Western Digital (Fremont), Llc Trailing edge optimized near field transducer having non-rectangular pin cross section
US8343364B1 (en) 2010-06-08 2013-01-01 Western Digital (Fremont), Llc Double hard-mask mill back method of fabricating a near field transducer for energy assisted magnetic recording
US8310901B1 (en) 2010-06-09 2012-11-13 Western Digital (Fremont), Llc Method and system for providing separate write and optical modules in an energy assisted magnetic recording disk drive
US8320219B1 (en) 2010-06-15 2012-11-27 Western Digital (Fremont), Llc Trailing edge optimized near field transducer
US8454846B1 (en) 2010-06-17 2013-06-04 Western Digital (Fremont), Llc Method and system for providing a full wrap-around shield using a frame configured wet etch in a damascene process
US8264798B1 (en) 2010-06-23 2012-09-11 Western Digital (Fremont), Llc Systems and methods for providing magnetic recording heads adapted for writing shingled tracks
US8248896B1 (en) 2010-06-24 2012-08-21 Western Digital (Fremont), Llc Method and system for providing an energy assisted magnetic recording disk drive having improved heat dissipation
US8262919B1 (en) 2010-06-25 2012-09-11 Western Digital (Fremont), Llc Method and system for providing a perpendicular magnetic recording pole using multiple chemical mechanical planarizations
US8441896B2 (en) * 2010-06-25 2013-05-14 Western Digital (Fremont), Llc Energy assisted magnetic recording head having laser integrated mounted to slider
US8422342B1 (en) 2010-06-25 2013-04-16 Western Digital (Fremont), Llc Energy assisted magnetic recording disk drive using a distributed feedback laser
US8322022B1 (en) 2010-06-28 2012-12-04 Western Digital (Fremont), Llc Method for providing an energy assisted magnetic recording head in a wafer packaging configuration
US8248892B2 (en) * 2010-08-20 2012-08-21 Tdk Corporation Head gimbal assembly with two wiring layers comprising thermally-assisted head
US8220140B1 (en) 2010-09-13 2012-07-17 Western Digital (Fremont), Llc System for performing bonding a first substrate to a second substrate
US8790524B1 (en) 2010-09-13 2014-07-29 Western Digital (Fremont), Llc Method and system for providing a magnetic recording transducer using a line hard mask and a wet-etchable mask
US8444866B1 (en) 2010-09-21 2013-05-21 Westen Digital (Fremont), LLC Method and system for providing a perpendicular magnetic recording pole with a multi-layer side gap
US8240025B2 (en) * 2010-09-23 2012-08-14 Tdk Corporation Method for manufacturing head including light source unit for thermal assist
US8250737B2 (en) * 2010-10-14 2012-08-28 Tdk Corporation Method for manufacturing head including light source unit for thermal assist
US8194512B2 (en) 2010-11-08 2012-06-05 Hitachi Global Storage Technologies Netherlands B.V. Head structure for thermally-assisted recording (TAR) disk drive
US9018100B2 (en) 2010-11-10 2015-04-28 Western Digital (Fremont), Llc Damascene process using PVD sputter carbon film as CMP stop layer for forming a magnetic recording head
US8413317B1 (en) 2010-11-12 2013-04-09 Western Digital (Fremont), Llc Method for fabricating a structure for a microelectric device
US8518279B1 (en) 2010-11-15 2013-08-27 Western Digital (Fremont), Llc Method and system for providing a laser cavity for an energy assisted magnetic recording head
US8456964B1 (en) 2010-11-16 2013-06-04 Western Digital (Fremont), Llc Energy assisted magnetic recording head having a reflector for improving efficiency of the light beam
US8462592B1 (en) 2010-11-17 2013-06-11 Western Digital (Fremont), Llc Energy-assisted magnetic recording head having waveguide capable of providing small beam spots
US8957692B2 (en) * 2010-12-02 2015-02-17 Tdk Corporation Method for performing burn-in test
US8441756B1 (en) 2010-12-16 2013-05-14 Western Digital (Fremont), Llc Method and system for providing an antiferromagnetically coupled writer
US8456966B1 (en) 2010-12-17 2013-06-04 Western Digital (Fremont), Llc Method and system for enhancing optical efficiency for an EAMR head
US8670295B1 (en) 2010-12-20 2014-03-11 Western Digital (Fremont), Llc Method and system for optically coupling a laser with a transducer in an energy assisted magnetic recording disk drive
US8289821B1 (en) 2010-12-21 2012-10-16 Western Digital (Fremont), Llc Method and system for pulsing EAMR disk drives
US8486286B1 (en) 2010-12-21 2013-07-16 Western Digital (Fremont), Llc Method and system for providing an energy assisted magnetic recording writer having an integrated NFT, heat sink, and pole
US8593914B2 (en) 2010-12-22 2013-11-26 Western Digital (Fremont), Llc Method and system for optically coupling a laser with a transducer in an energy assisted magnetic recording disk drive
US8760819B1 (en) 2010-12-23 2014-06-24 Western Digital (Fremont), Llc Magnetic recording sensor with sputtered antiferromagnetic coupling trilayer between plated ferromagnetic shields
US8797686B1 (en) 2010-12-23 2014-08-05 Western Digital (Fremont), Llc Magnetic recording transducer with short effective throat height and method of fabrication
US8588039B1 (en) 2011-03-02 2013-11-19 Western Digital (Fremont), Llc Energy-assisted magnetic recording head having multiple cores of different lengths
US8491802B1 (en) 2011-03-08 2013-07-23 Western Digital (Fremont), Llc Method of forming a dielectric slope for EAMR and magnetic writer
US8307540B1 (en) 2011-03-10 2012-11-13 Western Digital (Fremont), Llc Method for providing an energy assisted magnetic recording (EAMR) transducer
US8721902B1 (en) 2011-03-11 2014-05-13 Western Digital (Fremont), Llc Method and system for providing an energy assisted magnetic recording writer having a heat sink and NFT
US20120237878A1 (en) 2011-03-18 2012-09-20 Western Digital (Fremont), Llc Method and system for providing a side shield for a perpendicular magnetic recording pole
US8790527B1 (en) 2011-03-22 2014-07-29 Western Digital (Fremont), Llc Method and system for manufacturing tapered waveguide structures in an energy assisted magnetic recording head
US8456961B1 (en) 2011-03-22 2013-06-04 Western Digital (Fremont), Llc Systems and methods for mounting and aligning a laser in an electrically assisted magnetic recording assembly
US8405930B1 (en) 2011-03-23 2013-03-26 Western Digital (Fremont), Llc Method and system for providing a transducer having dual, ABS recessed auxiliary poles on opposite sides of a main pole with non-magnetic spacer adjoining back portion of main pole and positioned between auxiliary poles
US8597528B1 (en) 2011-03-30 2013-12-03 Western Digital (Fremont), Llc Method and system for defining a read sensor using an ion mill planarization
US8547659B1 (en) 2011-05-09 2013-10-01 Western Digital (Fremont), Llc System for providing a transducer having a main coil and an additional coil separated from the main pole by a write shield
US8871102B2 (en) 2011-05-25 2014-10-28 Western Digital (Fremont), Llc Method and system for fabricating a narrow line structure in a magnetic recording head
US8578594B2 (en) 2011-06-06 2013-11-12 Western Digital (Fremont), Llc Process for fabricating a magnetic pole and shields
US8634280B1 (en) 2011-06-21 2014-01-21 Western Digital (Fremont), Llc Method and system for providing an energy assisted magnetic recording writer having a ring shaped NFT
US8518832B1 (en) 2011-06-27 2013-08-27 Western Digital (Fremont), Llc Process for masking and removal of residue from complex shapes
US8325569B1 (en) 2011-06-27 2012-12-04 Western Digital (Fremont), Llc EAMR head having improved optical coupling efficiency
US8705205B1 (en) 2011-06-27 2014-04-22 Western Digital (Fremont), Llc Magnetic recording head having a dual sidewall angle
US8563146B1 (en) 2011-06-27 2013-10-22 Western Digital (Fremont), Llc Method and system for providing a magnetic recording pole having a dual sidewall angle
US8493695B1 (en) 2011-06-28 2013-07-23 Western Digital (Fremont), Llc Method and system for providing a magnetic read transducer having an improved signal to noise ratio
US8419953B1 (en) 2011-06-28 2013-04-16 Western Digital (Fremont), Llc Method and system for removing an antiferromagnetic seed structure
US8506828B1 (en) 2011-06-28 2013-08-13 Western Digital (Fremont), Llc Method and system for providing a magnetic recording transducer using an ion beam scan polishing planarization
US8514517B1 (en) 2011-06-30 2013-08-20 Western Digital (Fremont), Llc Systems and methods for providing hybrid coils for magnetic write heads
US8480911B1 (en) 2011-06-30 2013-07-09 Western Digital (Fremont), Llc Method and system for providing a read sensor in a magnetic recording transducer using focused ion beam scan polishing
US8288204B1 (en) 2011-08-30 2012-10-16 Western Digital (Fremont), Llc Methods for fabricating components with precise dimension control
US8524068B2 (en) 2011-08-30 2013-09-03 Western Digital (Fremont), Llc Low-rate electrochemical etch of thin film metals and alloys
US8456967B1 (en) 2011-10-12 2013-06-04 Western Digital (Fremont), Llc Systems and methods for providing a pole pedestal for microwave assisted magnetic recording
US8320220B1 (en) 2011-10-13 2012-11-27 Western Digital (Fremont), Llc Method and system for providing an energy assisted magnetic recording disk drive having a non-conformal heat spreader
US8533937B1 (en) 2011-10-18 2013-09-17 Western Digital (Fremont), Llc Method of forming a fully wrapped-around shielded PMR writer pole
US8582238B1 (en) 2011-10-21 2013-11-12 Western Digital (Fremont), Llc Systems and methods for providing perpendicular magnetic writers having gradient magnetic moment side shields
US8419954B1 (en) 2011-10-31 2013-04-16 Western Digital (Fremont), Llc Method for providing a side shield for a magnetic recording transducer
US8491801B1 (en) 2011-11-08 2013-07-23 Western Digital (Fremont), Llc Method and system for providing an NFT using a sacrificial NFT structure
US8693141B1 (en) 2011-11-08 2014-04-08 Western Digital (Fremont), Llc Systems and methods for providing stacked writer leads for magnetic transducers
US8630068B1 (en) 2011-11-15 2014-01-14 Western Digital (Fremont), Llc Method and system for providing a side shielded read transducer
US8422176B1 (en) 2011-11-15 2013-04-16 Western Digital (Fremont), Llc Method and system for providing a magnetic read transducer having a bilayer magnetic seed layer
US8675318B1 (en) 2011-11-22 2014-03-18 Western Digital (Fremont), Llc Method and system for providing a read transducer having a reduced shield-to-shield spacing
US8607438B1 (en) 2011-12-01 2013-12-17 Western Digital (Fremont), Llc Method for fabricating a read sensor for a read transducer
US8555486B1 (en) 2011-12-06 2013-10-15 Western Digital (Fremont), Llc Method for providing a pole in a magnetic recording transducer using a cathodic etch
US8520336B1 (en) 2011-12-08 2013-08-27 Western Digital (Fremont), Llc Magnetic recording head with nano scale pole tip bulge
US8749790B1 (en) 2011-12-08 2014-06-10 Western Digital (Fremont), Llc Structure and method to measure waveguide power absorption by surface plasmon element
US8749920B1 (en) 2011-12-16 2014-06-10 Western Digital (Fremont), Llc Magnetic recording head with dynamic fly height heating and having thermally controlled pole tip protrusion to control and protect reader element
US8451563B1 (en) 2011-12-20 2013-05-28 Western Digital (Fremont), Llc Method for providing a side shield for a magnetic recording transducer using an air bridge
US8670214B1 (en) 2011-12-20 2014-03-11 Western Digital (Fremont), Llc Method and system for providing enhanced thermal expansion for hard disk drives
US8599520B1 (en) 2011-12-20 2013-12-03 Western Digital (Fremont), Llc Method and system for providing a read transducer having an adaptive read sensor track width
US8760823B1 (en) 2011-12-20 2014-06-24 Western Digital (Fremont), Llc Method and system for providing a read transducer having soft and hard magnetic bias structures
US8797684B1 (en) 2011-12-20 2014-08-05 Western Digital (Fremont), Llc Magnetic writer configured for high data rate recording
US8611035B1 (en) 2012-02-06 2013-12-17 Western Digital (Fremont), Llc Capacitance sensor for determining a distance between a head and a magnetic storage medium
US8675455B1 (en) 2012-02-17 2014-03-18 Western Digital (Fremont), Llc Systems and methods for controlling light phase difference in interferometric waveguides at near field transducers
US8670294B1 (en) 2012-02-17 2014-03-11 Western Digital (Fremont), Llc Systems and methods for increasing media absorption efficiency using interferometric waveguides
US9093639B2 (en) 2012-02-21 2015-07-28 Western Digital (Fremont), Llc Methods for manufacturing a magnetoresistive structure utilizing heating and cooling
US8670213B1 (en) 2012-03-16 2014-03-11 Western Digital (Fremont), Llc Methods for tunable plating seed step coverage
US8477571B1 (en) 2012-03-27 2013-07-02 Seagate Technology Llc Heat assisted magnetic recording using surface-emitting distributed feedback laser
US8703397B1 (en) 2012-03-29 2014-04-22 Western Digital (Fremont), Llc Method for providing side shields for a magnetic recording transducer
US8520337B1 (en) 2012-03-30 2013-08-27 Western Digital (Fremont), Llc Perpendicular magnetic recording writer pole with leading and trailing bevel side wall angles at air bearing surface
US8493693B1 (en) 2012-03-30 2013-07-23 Western Digital (Fremont), Llc Perpendicular magnetic recording transducer with AFM insertion layer
US8860407B2 (en) 2012-03-30 2014-10-14 Western Digital (Fremont), Llc Method and system for performing on-wafer testing of heads
US8611054B1 (en) 2012-04-11 2013-12-17 Western Digital (Fremont), Llc Antiferromagnetically-coupled soft bias magnetoresistive read head, and fabrication method therefore
US8526275B1 (en) 2012-04-27 2013-09-03 Westerni Digital (Fremont), LLC Systems and methods for dissipating heat from a near-field transducer in an energy assisted magnetic recording assembly
US8753903B1 (en) 2012-05-22 2014-06-17 Western Digital (Fremont), Llc Methods and apparatuses for performing wafer level characterization of a plasmon element
US8582241B1 (en) 2012-05-23 2013-11-12 Western Digital (Fremont), Llc Method and system for providing a magnetic transducer having a high moment bilayer magnetic seed layer for a trailing shield
US8792208B1 (en) 2012-05-25 2014-07-29 Western Digital (Fremont), Llc Method for providing side shields having non-conformal regions for a magnetic recording transducer
US8582253B1 (en) 2012-06-04 2013-11-12 Western Digital (Fremont), Llc Magnetic sensor having a high spin polarization reference layer
US8724259B1 (en) 2012-06-11 2014-05-13 Western Digital (Fremont), Llc Conformal high moment side shield seed layer for perpendicular magnetic recording writer
US8619512B1 (en) 2012-06-22 2013-12-31 Western Digital (Fremont), Llc Stress buffer for near-field transducer in energy assisted magnetic recording and methods for fabricating the same
US8786983B1 (en) 2012-06-25 2014-07-22 Western Digital (Fremont), Llc Magnetic writer having a low aspect ratio two layer coil
US8565049B1 (en) 2012-06-26 2013-10-22 Western Digital (Fremont), Llc Method and system for reducing thermal protrusion of an NFT
US8628672B1 (en) 2012-06-27 2014-01-14 Western Digital (Fremont), Llc Process for manufacturing a perpendicular magnetic recording writer pole with nonmagnetic bevel
US8711528B1 (en) 2012-06-29 2014-04-29 Western Digital (Fremont), Llc Tunnel magnetoresistance read head with narrow shield-to-shield spacing
US8797692B1 (en) 2012-09-07 2014-08-05 Western Digital (Fremont), Llc Magnetic recording sensor with AFM exchange coupled shield stabilization
US8625233B1 (en) 2012-09-20 2014-01-07 Western Digital (Fremont), Llc System and method for fabricating a magnetic recording pole
US8711518B1 (en) 2012-09-27 2014-04-29 Western Digital (Fremont), Llc System and method for deposition in high aspect ratio magnetic writer heads
US8681594B1 (en) 2012-09-28 2014-03-25 Western Digital (Fremont), Llc Method and system for improving laser alignment and optical transmission efficiency of an energy assisted magnetic recording head
US8760807B1 (en) 2012-09-28 2014-06-24 Western Digital (Fremont), Llc Method for providing a wraparound shield for a magnetic recording transducer using a damascene process
US8760822B1 (en) 2012-11-28 2014-06-24 Western Digital (Fremont), Llc Method and system for providing a read transducer having an extended pinned layer and soft magnetic bias structures with improved stability
US9053719B2 (en) 2012-11-30 2015-06-09 Western Digital (Fremont), Llc Magnetoresistive sensor for a magnetic storage system read head, and fabrication method thereof
US8531801B1 (en) 2012-12-20 2013-09-10 Western Digital (Fremont), Llc Method and system for providing a read transducer having a composite magnetic shield with smooth interfaces
US20140175050A1 (en) 2012-12-21 2014-06-26 Western Digital (Fremont), Llc Method for providing a magnetic recording transducer including a wraparound shield and a rectangular pole
US8760818B1 (en) 2013-01-09 2014-06-24 Western Digital (Fremont), Llc Systems and methods for providing magnetic storage elements with high magneto-resistance using heusler alloys
US8780505B1 (en) 2013-03-12 2014-07-15 Western Digital (Fremont), Llc Method and system for providing a read transducer having an improved composite magnetic shield

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1831987A (zh) * 2004-12-22 2006-09-13 西加特技术有限责任公司 使用波导结构和相变介质的光学记录
WO2009150981A1 (ja) * 2008-06-10 2009-12-17 株式会社日立製作所 熱アシスト磁気記録ヘッド

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US9245543B1 (en) 2016-01-26

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