JP4746778B2 - 磁気記録媒体及びそれを用いた磁気記憶装置 - Google Patents

磁気記録媒体及びそれを用いた磁気記憶装置 Download PDF

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Publication number
JP4746778B2
JP4746778B2 JP2001195695A JP2001195695A JP4746778B2 JP 4746778 B2 JP4746778 B2 JP 4746778B2 JP 2001195695 A JP2001195695 A JP 2001195695A JP 2001195695 A JP2001195695 A JP 2001195695A JP 4746778 B2 JP4746778 B2 JP 4746778B2
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Japan
Prior art keywords
magnetic
layer
film
recording medium
magnetic layer
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JP2001195695A
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English (en)
Japanese (ja)
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JP2003016624A (ja
JP2003016624A5 (2
Inventor
義幸 平山
博之 鈴木
宏之 片岡
四男 屋久
哲也 神邊
Original Assignee
株式会社日立グローバルストレージテクノロジーズ
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Priority to JP2001195695A priority Critical patent/JP4746778B2/ja
Priority to US10/067,333 priority patent/US7261958B2/en
Publication of JP2003016624A publication Critical patent/JP2003016624A/ja
Publication of JP2003016624A5 publication Critical patent/JP2003016624A5/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
    • G11B5/676—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 magnetic layers separated by a nonmagnetic layer, e.g. antiferromagnetic layer, Cu layer or coupling layer
    • 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
    • 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
    • G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
    • 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
    • G11B2005/0002—Special dispositions or recording techniques
    • 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
    • G11B2005/001—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure
    • G11B2005/0013—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation
    • G11B2005/0016—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation of magnetoresistive transducers

Landscapes

  • Magnetic Record Carriers (AREA)
  • Thin Magnetic Films (AREA)
JP2001195695A 2001-06-28 2001-06-28 磁気記録媒体及びそれを用いた磁気記憶装置 Expired - Fee Related JP4746778B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2001195695A JP4746778B2 (ja) 2001-06-28 2001-06-28 磁気記録媒体及びそれを用いた磁気記憶装置
US10/067,333 US7261958B2 (en) 2001-06-28 2002-02-07 Magnetic recording medium and magnetic recording system using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001195695A JP4746778B2 (ja) 2001-06-28 2001-06-28 磁気記録媒体及びそれを用いた磁気記憶装置

Publications (3)

Publication Number Publication Date
JP2003016624A JP2003016624A (ja) 2003-01-17
JP2003016624A5 JP2003016624A5 (2) 2006-06-08
JP4746778B2 true JP4746778B2 (ja) 2011-08-10

Family

ID=19033631

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001195695A Expired - Fee Related JP4746778B2 (ja) 2001-06-28 2001-06-28 磁気記録媒体及びそれを用いた磁気記憶装置

Country Status (2)

Country Link
US (1) US7261958B2 (2)
JP (1) JP4746778B2 (2)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9858950B1 (en) 2016-10-26 2018-01-02 International Business Machines Corporation Dual-layer magnetic recording

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6723450B2 (en) * 2002-03-19 2004-04-20 Hitachi Global Storage Technologies Netherlands B.V. Magnetic recording medium with antiparallel coupled ferromagnetic films as the recording layer
JP4123806B2 (ja) * 2002-03-29 2008-07-23 高橋 研 磁気記録媒体、その製造方法および磁気記録装置
AU2003240813A1 (en) * 2002-09-30 2004-04-23 Seagate Technology Llc Intermediate layer for perpendicular magnetic recording media
CN1296899C (zh) 2003-01-27 2007-01-24 富士通株式会社 磁性记录介质和磁性存储设备
JP2005032353A (ja) * 2003-07-14 2005-02-03 Fujitsu Ltd 磁気記録媒体、磁気記憶装置、および磁気記録媒体の記録方法
US6939626B2 (en) * 2003-07-24 2005-09-06 Hitachi Global Storage Technologies Netherlands B.V. Magnetic anisotropy adjusted laminated magnetic thin films for magnetic recording
JP2005085338A (ja) 2003-09-05 2005-03-31 Fujitsu Ltd 磁気記録媒体、磁気記憶装置、及び記録方法
JP4877506B2 (ja) * 2004-03-31 2012-02-15 日本電気株式会社 磁化方向制御方法、及びそれを応用したｍｒａｍ
US7384699B2 (en) * 2004-08-02 2008-06-10 Seagate Technology Llc Magnetic recording media with tuned exchange coupling and method for fabricating same
US7736765B2 (en) * 2004-12-28 2010-06-15 Seagate Technology Llc Granular perpendicular magnetic recording media with dual recording layer and method of fabricating same
US8110298B1 (en) 2005-03-04 2012-02-07 Seagate Technology Llc Media for high density perpendicular magnetic recording
US8119263B2 (en) * 2005-09-22 2012-02-21 Seagate Technology Llc Tuning exchange coupling in magnetic recording media
US7846564B2 (en) * 2005-09-27 2010-12-07 Seagate Technology Llc Perpendicular magnetic recording media with magnetic anisotropy/coercivity gradient and local exchange coupling
US7978429B2 (en) * 2006-09-19 2011-07-12 International Business Machines Corporation Low track pitch write module and bidirectional tape head
US20090080110A1 (en) * 2007-09-24 2009-03-26 Andreas Berger Perpendicular recording magnetic media with imbalanced magnetic moment multilayer cap structure
US8697260B2 (en) * 2008-07-25 2014-04-15 Seagate Technology Llc Method and manufacture process for exchange decoupled first magnetic layer
US9311948B2 (en) * 2008-12-31 2016-04-12 Seagate Technology Llc Magnetic layering for bit-patterned stack
US9142240B2 (en) 2010-07-30 2015-09-22 Seagate Technology Llc Apparatus including a perpendicular magnetic recording layer having a convex magnetic anisotropy profile
JP2014072393A (ja) * 2012-09-28 2014-04-21 Sony Corp 記憶素子、記憶装置、磁気ヘッド

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3273374B2 (ja) 1990-12-21 2002-04-08 株式会社アルバック 磁気記録体
JP3805018B2 (ja) 1996-04-26 2006-08-02 富士通株式会社 磁気記録媒体及び磁気ディスク装置
SG97791A1 (en) * 1999-05-13 2003-08-20 Inst Data Storage High coercivity cobalt based alloy longitudinal recording media and method for its fabrication
JP3421632B2 (ja) 1999-06-08 2003-06-30 富士通株式会社 磁気記録媒体、磁気記憶装置、記録方法及び磁気記録媒体の製造方法
US6372330B1 (en) * 1999-10-08 2002-04-16 International Business Machines Corporation Laminated magnetic recording media with antiferromagnetically coupled layers as the individual magnetic layers in the laminate
US6280813B1 (en) * 1999-10-08 2001-08-28 International Business Machines Corporation Magnetic recording media with antiferromagnetically coupled ferromagnetic films as the recording layer
US6383668B1 (en) * 2000-03-27 2002-05-07 International Business Machines Corporation Magnetic recording media with antiferromagnetically coupled host layer for the magnetic recording layer
US6645614B1 (en) * 2000-07-25 2003-11-11 Seagate Technology Llc Magnetic recording media having enhanced coupling between magnetic layers
US6537684B1 (en) * 2000-08-04 2003-03-25 International Business Machines Corporation Antiferromagnetically coupled magnetic recording media with boron-free first ferromagnetic film as nucleation layer
US6761982B2 (en) * 2000-12-28 2004-07-13 Showa Denko Kabushiki Kaisha Magnetic recording medium, production process and apparatus thereof, and magnetic recording and reproducing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9858950B1 (en) 2016-10-26 2018-01-02 International Business Machines Corporation Dual-layer magnetic recording

Also Published As

Publication number Publication date
JP2003016624A (ja) 2003-01-17
US7261958B2 (en) 2007-08-28
US20030017369A1 (en) 2003-01-23

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