JP4286208B2 - 垂直記録用磁気ヘッドとその製造方法及びそれを用いた磁気ディスク装置 - Google Patents

垂直記録用磁気ヘッドとその製造方法及びそれを用いた磁気ディスク装置 Download PDF

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Publication number
JP4286208B2
JP4286208B2 JP2004305843A JP2004305843A JP4286208B2 JP 4286208 B2 JP4286208 B2 JP 4286208B2 JP 2004305843 A JP2004305843 A JP 2004305843A JP 2004305843 A JP2004305843 A JP 2004305843A JP 4286208 B2 JP4286208 B2 JP 4286208B2
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Japan
Prior art keywords
shield
magnetic
pole
main
auxiliary
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Expired - Fee Related
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JP2004305843A
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Japanese (ja)
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JP2006120223A5 (enExample
JP2006120223A (ja
Inventor
公俊 江藤
智弘 岡田
功 布川
正文 望月
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ヒタチグローバルストレージテクノロジーズネザーランドビーブイ
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Priority to JP2004305843A priority Critical patent/JP4286208B2/ja
Priority to US11/254,138 priority patent/US8203803B2/en
Publication of JP2006120223A publication Critical patent/JP2006120223A/ja
Publication of JP2006120223A5 publication Critical patent/JP2006120223A5/ja
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Publication of JP4286208B2 publication Critical patent/JP4286208B2/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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
    • 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
    • G11B5/3116—Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks
    • 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
    • G11B5/3136—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 for reducing the pole-tip-protrusion at the head transducing surface, e.g. caused by thermal expansion of dissimilar materials
    • 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
    • G11B5/3143—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding
    • G11B5/3146—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic layers
    • G11B5/315—Shield layers on both sides of the main pole, e.g. in perpendicular magnetic heads

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetic Heads (AREA)
JP2004305843A 2004-10-20 2004-10-20 垂直記録用磁気ヘッドとその製造方法及びそれを用いた磁気ディスク装置 Expired - Fee Related JP4286208B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2004305843A JP4286208B2 (ja) 2004-10-20 2004-10-20 垂直記録用磁気ヘッドとその製造方法及びそれを用いた磁気ディスク装置
US11/254,138 US8203803B2 (en) 2004-10-20 2005-10-18 Magnetic recording head for perpendicular recording with wrap around shield, the fabrication process and magnetic disk storage apparatus mounting the magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004305843A JP4286208B2 (ja) 2004-10-20 2004-10-20 垂直記録用磁気ヘッドとその製造方法及びそれを用いた磁気ディスク装置

Publications (3)

Publication Number Publication Date
JP2006120223A JP2006120223A (ja) 2006-05-11
JP2006120223A5 JP2006120223A5 (enExample) 2007-03-01
JP4286208B2 true JP4286208B2 (ja) 2009-06-24

Family

ID=36180488

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004305843A Expired - Fee Related JP4286208B2 (ja) 2004-10-20 2004-10-20 垂直記録用磁気ヘッドとその製造方法及びそれを用いた磁気ディスク装置

Country Status (2)

Country Link
US (1) US8203803B2 (enExample)
JP (1) JP4286208B2 (enExample)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7289295B2 (en) * 2004-05-12 2007-10-30 Headway Technologies, Inc. Return pole field reduction for perpendicular write head
JP4113879B2 (ja) * 2005-02-04 2008-07-09 Ｔｄｋ株式会社 垂直磁気記録ヘッドおよび磁気記録装置
JP2007220261A (ja) * 2006-02-20 2007-08-30 Alps Electric Co Ltd 薄膜磁気ヘッド
US7593183B2 (en) * 2006-04-25 2009-09-22 Hitachi Global Storage Technologies Netherlands B.V. Magnetic write head design for reducing temperature induced protrusion
JP2007294059A (ja) * 2006-04-27 2007-11-08 Hitachi Global Storage Technologies Netherlands Bv 垂直記録磁気ヘッド
US20080112088A1 (en) * 2006-11-13 2008-05-15 Hitachi Global Storage Technologies Perpendicular magnetic write head having a wrap around trailing shield with a flux return path
US7558019B2 (en) * 2006-11-16 2009-07-07 Hitachi Global Storage Technologies Netherlands B.V. Perpendicular magnetic recording write head with flux-conductor contacting write pole
US8689430B1 (en) 2006-11-29 2014-04-08 Western Digital (Fremont), Llc Method for providing a perpendicular magnetic recording (PMR)head
JP2008186555A (ja) * 2007-01-31 2008-08-14 Hitachi Global Storage Technologies Netherlands Bv 磁気記録装置
US7835111B2 (en) * 2007-02-15 2010-11-16 Hitachi Global Storage Technologies Netherlands B.V. Magnetic write head with upper return pole optimization for reduced trailing shield protrusion
US7894159B2 (en) * 2007-04-19 2011-02-22 Hitachi Global Storage Technologies Netherlands B.V. Perpendicular write head with independent trailing shield designs
US7768743B2 (en) * 2007-05-11 2010-08-03 Hitachi Global Storage Technologies Netherlands B.V. Perpendicular magnetic recording write head with trailing shield having notch and throat height defined by nonmagnetic pad layer
US7995307B2 (en) * 2007-07-19 2011-08-09 Hitachi Global Storage Technologies Netherlands B.V. Perpendicular magnetic recording write head with trailing shield having throat height defined by electroplated nonmagnetic pad layer and method for making the head
US8035930B2 (en) * 2007-10-03 2011-10-11 Headway Technologies, Inc. Perpendicular magnetic recording write head with a side shield
US8015692B1 (en) 2007-11-07 2011-09-13 Western Digital (Fremont), Llc Method for providing a perpendicular magnetic recording (PMR) head
US7788798B2 (en) * 2007-11-21 2010-09-07 Hitachi Global Storage Technologies Netherlands B.V. Method for manufacturing a perpendicular magnetic write head with wrap around magnetic trailing and side shields
US8068312B2 (en) * 2007-11-21 2011-11-29 Hitachi Global Technologies Netherlands B.V. Perpendicular magnetic write head with stitched notched trailing shield
US7920358B2 (en) * 2007-12-06 2011-04-05 Hitachi Global Storage Technologies Netherlands B.V. Perpendicular magnetic recording write head with magnetic shields separated by nonmagnetic layers
JP5538676B2 (ja) * 2007-12-14 2014-07-02 エイチジーエスティーネザーランドビーブイ 垂直磁気記録ヘッド、磁気ヘッド及びこれらを搭載した磁気ディスク装置
US8089724B2 (en) * 2008-05-19 2012-01-03 Seagate Technology Llc Self-aligned perpendicular writer pole and front shield
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
US8720044B1 (en) 2008-09-26 2014-05-13 Western Digital (Fremont), Llc Method for manufacturing a magnetic recording transducer having side shields
JP2010092550A (ja) 2008-10-09 2010-04-22 Hitachi Global Storage Technologies Netherlands Bv 磁気記録ヘッド、その製造方法及び磁気記録再生装置
US8231796B1 (en) 2008-12-09 2012-07-31 Western Digital (Fremont), Llc Method and system for providing a magnetic recording transducer having side shields
US8422168B2 (en) * 2008-12-24 2013-04-16 HGST Netherlands B.V. Magnetic write head having a self-aligned side wrap-around shield with multi-angle slanted bump
US8400731B1 (en) 2009-04-19 2013-03-19 Western Digital (Fremont), Llc Write head with variable side shield gaps
JP5738521B2 (ja) * 2009-07-03 2015-06-24 エイチジーエスティーネザーランドビーブイ 垂直磁気記録ヘッド
US8441757B2 (en) * 2009-12-09 2013-05-14 HGST Netherlands B.V. Perpendicular magnetic write head with wrap-around shield, slanted pole and slanted pole bump fabricated by damascene process
US8824102B2 (en) * 2011-05-03 2014-09-02 Headway Technologies, Inc. Thin-film magnetic head with improved wide area track erasure (WATE), method of manufacturing the same, head gimbal assembly, and hard disk drive
US8411384B2 (en) * 2011-06-06 2013-04-02 HGST Netherlands B.V. Writer having a shield structure for adjacent and far track interference refreshment
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
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
US8908328B2 (en) * 2012-10-04 2014-12-09 Tdk Corporation Perpendicular magnetic write head and magnetic recording device having additional magnetic layer contacting front yoke and shield
US8867168B2 (en) 2012-12-07 2014-10-21 Tdk Corporation Magnetic head for perpendicular magnetic recording having a write shield
US8980109B1 (en) 2012-12-11 2015-03-17 Western Digital (Fremont), Llc Method for providing a magnetic recording transducer using a combined main pole and side shield CMP for a wraparound shield scheme
US8914969B1 (en) 2012-12-17 2014-12-23 Western Digital (Fremont), Llc Method for providing a monolithic shield for a magnetic recording transducer
US8619389B1 (en) 2013-02-26 2013-12-31 Tdk Corporation Magnetic head for perpendicular magnetic recording having a write shield
US9263067B1 (en) 2013-05-29 2016-02-16 Western Digital (Fremont), Llc Process for making PMR writer with constant side wall angle
US9275657B1 (en) 2013-08-14 2016-03-01 Western Digital (Fremont), Llc Process for making PMR writer with non-conformal side gaps
US8817418B1 (en) 2013-08-15 2014-08-26 Tdk Corporation Magnetic head for perpendicular magnetic recording having a write shield
US9286919B1 (en) 2014-12-17 2016-03-15 Western Digital (Fremont), Llc Magnetic writer having a dual side gap
US9595273B1 (en) 2015-09-30 2017-03-14 Western Digital (Fremont), Llc Shingle magnetic writer having nonconformal shields
US12437780B2 (en) * 2023-09-06 2025-10-07 Western Digital Technologies, Inc. DFL TDMR middle shield throat height control for improved stability

Family Cites Families (9)

* Cited by examiner, † Cited by third party
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US4935832A (en) * 1987-04-01 1990-06-19 Digital Equipment Corporation Recording heads with side shields
US4885649A (en) * 1987-04-01 1989-12-05 Digital Equipment Corporation Thin film head having a magneto-restrictive read element
US5075956A (en) * 1988-03-16 1991-12-31 Digital Equipment Corporation Method of making recording heads with side shields
CA1323695C (en) 1988-12-30 1993-10-26 Shyam Chandra Das Recording heads with side shields
US6954340B2 (en) * 2001-05-23 2005-10-11 Seagate Technology Llc Perpendicular magnetic recording head with nonmagnetic write gap greater than twice side shield gap distance
JP2004281017A (ja) 2003-03-19 2004-10-07 Alps Electric Co Ltd 磁気ヘッドの製造方法
JP4104511B2 (ja) * 2003-09-12 2008-06-18 Ｔｄｋ株式会社 垂直磁気ヘッドの製造方法
US7009812B2 (en) * 2003-09-29 2006-03-07 Hitachi Global Storage Technologies Netherlands B.V. Magnetic transducer for perpendicular magnetic recording with single pole write head with trailing shield
US7227720B2 (en) * 2004-06-21 2007-06-05 Headway Technologies, Inc. Magnetic head for perpendicular magnetic recording and method of manufacturing same

Also Published As

Publication number Publication date
US8203803B2 (en) 2012-06-19
US20060082924A1 (en) 2006-04-20
JP2006120223A (ja) 2006-05-11

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