DE60313206D1 - Vertikal-magnetaufzeichnungsmedium - Google Patents

Vertikal-magnetaufzeichnungsmedium

Info

Publication number
DE60313206D1
DE60313206D1 DE60313206T DE60313206T DE60313206D1 DE 60313206 D1 DE60313206 D1 DE 60313206D1 DE 60313206 T DE60313206 T DE 60313206T DE 60313206 T DE60313206 T DE 60313206T DE 60313206 D1 DE60313206 D1 DE 60313206D1
Authority
DE
Germany
Prior art keywords
recording medium
magnetic recording
vertical magnetic
vertical
medium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE60313206T
Other languages
English (en)
Other versions
DE60313206T2 (de
Inventor
Ryosaku Inamura
Hiroto Takeshita
Toshio Sugimoto
Kazumasa Shimoda
Takenori Oshima
Maki Maeda
Takuya Uzumaki
Atsushi Tanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resonac Holdings Corp
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of DE60313206D1 publication Critical patent/DE60313206D1/de
Application granted granted Critical
Publication of DE60313206T2 publication Critical patent/DE60313206T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • 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
    • G11B5/674—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 differing macroscopic or microscopic structures, e.g. differing crystalline lattices, varying atomic structures or differing roughnesses
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Magnetic Record Carriers (AREA)
DE60313206T 2003-02-20 2003-02-20 Vertikal-magnetaufzeichnungsmedium Expired - Fee Related DE60313206T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2003/001874 WO2004075178A1 (ja) 2003-02-20 2003-02-20 垂直磁気記録媒体

Publications (2)

Publication Number Publication Date
DE60313206D1 true DE60313206D1 (de) 2007-05-24
DE60313206T2 DE60313206T2 (de) 2007-07-19

Family

ID=32894242

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60313206T Expired - Fee Related DE60313206T2 (de) 2003-02-20 2003-02-20 Vertikal-magnetaufzeichnungsmedium

Country Status (7)

Country Link
US (1) US20050196649A1 (de)
EP (1) EP1560203B1 (de)
JP (1) JP3987532B2 (de)
CN (1) CN100373457C (de)
AU (1) AU2003211604A1 (de)
DE (1) DE60313206T2 (de)
WO (1) WO2004075178A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4864391B2 (ja) * 2004-09-06 2012-02-01 昭和電工株式会社 磁気記録媒体、その製造方法および磁気記録再生装置
JP2008276863A (ja) * 2007-04-27 2008-11-13 Fujitsu Ltd 垂直磁気記録媒体、その製造方法及び磁気記録装置
WO2009107248A1 (en) * 2008-02-26 2009-09-03 Fujitsu Limited Perpendicular magnetic recording media
JP5570270B2 (ja) * 2010-03-29 2014-08-13 昭和電工株式会社 熱アシスト磁気記録媒体及び磁気記憶装置
SG11201404072YA (en) 2012-07-20 2014-10-30 Jx Nippon Mining & Metals Corp Sputtering target for forming magnetic recording film and process for producing same
CN104685566B (zh) 2012-10-10 2017-11-28 富士电机株式会社 磁记录介质
US10276192B2 (en) * 2013-07-11 2019-04-30 Western Digital Technologies, Inc. Perpendicular magnetic recording medium

Family Cites Families (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4687712A (en) * 1983-12-12 1987-08-18 Matsushita Electric Industrial Co., Ltd. Vertical magnetic recording medium
JPH0744110B2 (ja) * 1988-09-02 1995-05-15 松下電器産業株式会社 高飽和磁束密度軟磁性膜及び磁気ヘッド
JPH0528453A (ja) * 1991-07-16 1993-02-05 Fujitsu Ltd 垂直磁気記録媒体
US5536585A (en) * 1993-03-10 1996-07-16 Hitachi, Ltd. Magnetic recording medium and fabrication method therefor
JPH07334832A (ja) * 1994-06-08 1995-12-22 Hitachi Ltd 垂直磁気記録媒体及び磁気記録装置
US6248416B1 (en) * 1997-11-10 2001-06-19 Carnegie Mellon University Highly oriented magnetic thin films, recording media, transducers, devices made therefrom and methods of making
JPH11283228A (ja) * 1998-03-26 1999-10-15 Showa Denko Kk 磁気記録媒体
JPH11283227A (ja) * 1998-03-26 1999-10-15 Showa Denko Kk 磁気記録媒体
US6274233B1 (en) * 1998-03-26 2001-08-14 Showa Denko Kabushiki Kaisha Magnetic recording medium
US6183893B1 (en) * 1998-04-06 2001-02-06 Hitachi, Ltd. Perpendicular magnetic recording medium and magnetic storage apparatus using the same
JP3041273B2 (ja) * 1998-07-14 2000-05-15 株式会社日立製作所 垂直磁気記録媒体及びそれを用いた磁気記録再生装置
JP2002541671A (ja) * 1999-03-30 2002-12-03 ドイッチェ テレコム アーゲー 制御キャビネット
JP3285558B2 (ja) * 1999-07-06 2002-05-27 株式会社日立製作所 垂直磁気記録媒体及び磁気記憶装置
US6562489B2 (en) * 1999-11-12 2003-05-13 Fujitsu Limited Magnetic recording medium and magnetic storage apparatus
JP2002304722A (ja) * 2001-04-06 2002-10-18 Fujitsu Ltd 垂直磁気記録媒体及びその製造方法並びに磁気記憶装置
JP2001143250A (ja) * 1999-11-12 2001-05-25 Fujitsu Ltd 磁気記録媒体及び磁気記憶装置
JP4091228B2 (ja) * 1999-12-28 2008-05-28 株式会社東芝 垂直磁気記録媒体
JP2001256640A (ja) * 2000-03-14 2001-09-21 Hitachi Maxell Ltd 磁気記録媒体及び磁気記録装置
JP2001283428A (ja) * 2000-03-30 2001-10-12 Toshiba Corp 垂直磁気記録媒体及び垂直磁気記録再生装置
US6818330B2 (en) * 2000-08-25 2004-11-16 Seagate Technology Llc Perpendicular recording medium with antiferromagnetic exchange coupling in soft magnetic underlayers
JP3652976B2 (ja) * 2000-09-28 2005-05-25 株式会社日立製作所 垂直磁気記録媒体及びこれを用いた磁気記憶装置
US7166375B2 (en) * 2000-12-28 2007-01-23 Showa Denko K.K. Magnetic recording medium utilizing a multi-layered soft magnetic underlayer, method of producing the same and magnetic recording and reproducing device
JP2002197635A (ja) * 2000-12-28 2002-07-12 Showa Denko Kk 磁気記録媒体、その製造方法および磁気記録再生装置
JP4409085B2 (ja) * 2000-12-28 2010-02-03 昭和電工株式会社 磁気記録媒体、その製造方法、および磁気記録再生装置
JP2002216333A (ja) * 2001-01-22 2002-08-02 Hitachi Maxell Ltd 磁気記録媒体及び磁気記録装置
US6699600B2 (en) * 2001-02-28 2004-03-02 Showa Denko K.K. Magnetic recording medium, method of manufacture therefor, and apparatus for magnetic recording and reproducing recordings
JP4757400B2 (ja) * 2001-05-09 2011-08-24 昭和電工株式会社 垂直磁気記録媒体、および磁気記録再生装置
JP2002352409A (ja) * 2001-05-23 2002-12-06 Showa Denko Kk 磁気記録媒体、その製造方法、および磁気記録再生装置
SG115476A1 (en) * 2001-05-23 2005-10-28 Showa Denko Kk Magnetic recording medium, method of manufacturing therefor and magnetic replay apparatus
JP2003016620A (ja) * 2001-06-29 2003-01-17 Toshiba Corp 磁気記録媒体、磁気記録装置および磁気記録方法

Also Published As

Publication number Publication date
EP1560203B1 (de) 2007-04-11
AU2003211604A1 (en) 2004-09-09
EP1560203A1 (de) 2005-08-03
EP1560203A4 (de) 2005-10-19
US20050196649A1 (en) 2005-09-08
CN100373457C (zh) 2008-03-05
JP3987532B2 (ja) 2007-10-10
WO2004075178A1 (ja) 2004-09-02
CN1689078A (zh) 2005-10-26
JPWO2004075178A1 (ja) 2006-06-01
DE60313206T2 (de) 2007-07-19

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: SHOWA DENKO K.K., MINATO-KU, TOKYO, JP

8339 Ceased/non-payment of the annual fee