JP6081134B2 - 垂直磁気記録媒体及び磁気記憶装置 - Google Patents

垂直磁気記録媒体及び磁気記憶装置 Download PDF

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Publication number
JP6081134B2
JP6081134B2 JP2012230239A JP2012230239A JP6081134B2 JP 6081134 B2 JP6081134 B2 JP 6081134B2 JP 2012230239 A JP2012230239 A JP 2012230239A JP 2012230239 A JP2012230239 A JP 2012230239A JP 6081134 B2 JP6081134 B2 JP 6081134B2
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magnetic
layer
recording
recording medium
film
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Japanese (ja)
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JP2014081981A5 (https=
JP2014081981A (ja
Inventor
芳博 城石
芳博 城石
平山　義幸
義幸 平山
福田　宏
宏 福田
佐藤　陽
陽 佐藤
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Hitachi Ltd
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Hitachi Ltd
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Priority to JP2012230239A priority Critical patent/JP6081134B2/ja
Priority to US14/055,012 priority patent/US20140104724A1/en
Publication of JP2014081981A publication Critical patent/JP2014081981A/ja
Publication of JP2014081981A5 publication Critical patent/JP2014081981A5/ja
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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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
    • G11B5/672—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers having different compositions in a plurality of magnetic layers, e.g. layer compositions having differing elemental components or differing proportions of elements
    • 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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/7368—Non-polymeric layer under the lowermost magnetic recording layer
    • G11B5/7369—Two or more non-magnetic underlayers, e.g. seed layers or barrier layers
    • G11B5/737—Physical structure of underlayer, e.g. texture
    • 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/851—Coating a support with a magnetic layer by sputtering

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  • Magnetic Record Carriers (AREA)
  • Magnetic Heads (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Physical Vapour Deposition (AREA)
JP2012230239A 2012-10-17 2012-10-17 垂直磁気記録媒体及び磁気記憶装置 Active JP6081134B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2012230239A JP6081134B2 (ja) 2012-10-17 2012-10-17 垂直磁気記録媒体及び磁気記憶装置
US14/055,012 US20140104724A1 (en) 2012-10-17 2013-10-16 Perpendicular magnetic recording medium and magnetic storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012230239A JP6081134B2 (ja) 2012-10-17 2012-10-17 垂直磁気記録媒体及び磁気記憶装置

Publications (3)

Publication Number Publication Date
JP2014081981A JP2014081981A (ja) 2014-05-08
JP2014081981A5 JP2014081981A5 (https=) 2015-09-03
JP6081134B2 true JP6081134B2 (ja) 2017-02-15

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Country Status (2)

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US (1) US20140104724A1 (https=)
JP (1) JP6081134B2 (https=)

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WO2015199037A1 (ja) * 2014-06-24 2015-12-30 株式会社Moresco フルオロポリエーテル化合物、潤滑剤ならびに磁気ディスク
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US9378759B2 (en) * 2014-11-20 2016-06-28 HGST Netherlands B.V. Spin torque oscillator with low magnetic moment and high perpendicular magnetic anisotropy material
JP5932960B1 (ja) * 2014-12-22 2016-06-08 株式会社東芝 磁気記録装置
US9202484B1 (en) * 2015-01-09 2015-12-01 HGST Netherlands B.V. Magnetic head provided spin torque oscillator with low drive voltage for microwave assisted magnetic recording
US9934808B2 (en) 2015-03-11 2018-04-03 Western Digital Technologies, Inc. Magnetic recording medium with multiple exchange coupling layers and small grain magnetic layers
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JP6563861B2 (ja) * 2016-06-06 2019-08-21 株式会社東芝 磁気記録再生装置
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US9805746B1 (en) 2016-06-28 2017-10-31 Western Digital Technologies, Inc. Low magnetic flux density interface layer for spin torque oscillator
TWI821984B (zh) * 2016-07-27 2023-11-11 美商應用材料股份有限公司 具有合金吸收劑的極紫外線遮罩坯料及製造極紫外線遮罩坯料的方法
US9966095B2 (en) * 2016-08-02 2018-05-08 Western Digital Technologies, Inc. Perpendicular magnetic recording media having an extremely low Hk layer
JP2018101673A (ja) * 2016-12-19 2018-06-28 国立大学法人東北大学 磁性薄膜及び磁性薄膜の製造方法
US10424323B1 (en) 2016-12-30 2019-09-24 Western Digital Technologies, Inc. High-bandwidth STO bias architecture with integrated slider voltage potential control
US10388305B1 (en) 2016-12-30 2019-08-20 Western Digital Technologies, Inc. Apparatus and method for writing to magnetic media using an AC bias current to enhance the write field
US20180218752A1 (en) * 2017-02-01 2018-08-02 Seagate Technology Llc Heat assisted recording media including mutli-layer granular heatsink
US20180286441A1 (en) * 2017-03-28 2018-10-04 Seagate Technology Llc Heat assisted magnetic recording (hamr) media with exchange tuning layer
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JP6867982B2 (ja) 2018-08-20 2021-05-12 株式会社東芝 磁気ヘッド及び磁気記録再生装置
US10643643B1 (en) * 2019-01-23 2020-05-05 Western Digital Technologies, Inc. Spin torque oscillator device including a high damping field generation layer or a damping enhancing capping layer
US10665263B1 (en) * 2019-02-10 2020-05-26 Western Digital Technologies, Inc. Data storage device converting disk surface to read-only
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US11170803B1 (en) 2019-04-05 2021-11-09 Western Digital Technologies, Inc. Magnetic recording write head with spin-torque oscillator (STO) and extended seed layer
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JP7395425B2 (ja) * 2020-03-11 2023-12-11 株式会社東芝 磁気記録装置
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JP2014081981A (ja) 2014-05-08

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