JP4072324B2 - 磁気記録媒体及びその製造方法 - Google Patents

磁気記録媒体及びその製造方法 Download PDF

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Publication number
JP4072324B2
JP4072324B2 JP2001192190A JP2001192190A JP4072324B2 JP 4072324 B2 JP4072324 B2 JP 4072324B2 JP 2001192190 A JP2001192190 A JP 2001192190A JP 2001192190 A JP2001192190 A JP 2001192190A JP 4072324 B2 JP4072324 B2 JP 4072324B2
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Japan
Prior art keywords
film
magnetic
alloy
less
forming
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
JP2001192190A
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English (en)
Japanese (ja)
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JP2003006841A5 (enExample
JP2003006841A (ja
Inventor
好文 松田
浩二 阪本
哲也 神邊
四男 屋久
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
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
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Priority to JP2001192190A priority Critical patent/JP4072324B2/ja
Priority to US10/077,880 priority patent/US6756113B2/en
Publication of JP2003006841A publication Critical patent/JP2003006841A/ja
Priority to US10/847,875 priority patent/US20040213991A1/en
Publication of JP2003006841A5 publication Critical patent/JP2003006841A5/ja
Application granted granted Critical
Publication of JP4072324B2 publication Critical patent/JP4072324B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • G11B5/64—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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12465—All metal or with adjacent metals having magnetic properties, or preformed fiber orientation coordinate with shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12931—Co-, Fe-, or Ni-base components, alternative to each other
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less

Landscapes

  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
JP2001192190A 2001-06-26 2001-06-26 磁気記録媒体及びその製造方法 Expired - Fee Related JP4072324B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2001192190A JP4072324B2 (ja) 2001-06-26 2001-06-26 磁気記録媒体及びその製造方法
US10/077,880 US6756113B2 (en) 2001-06-26 2002-02-20 Magnetic recording medium and manufacturing method thereof
US10/847,875 US20040213991A1 (en) 2001-06-26 2004-05-19 Magnetic recording medium and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001192190A JP4072324B2 (ja) 2001-06-26 2001-06-26 磁気記録媒体及びその製造方法

Publications (3)

Publication Number Publication Date
JP2003006841A JP2003006841A (ja) 2003-01-10
JP2003006841A5 JP2003006841A5 (enExample) 2005-08-04
JP4072324B2 true JP4072324B2 (ja) 2008-04-09

Family

ID=19030680

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001192190A Expired - Fee Related JP4072324B2 (ja) 2001-06-26 2001-06-26 磁気記録媒体及びその製造方法

Country Status (2)

Country Link
US (2) US6756113B2 (enExample)
JP (1) JP4072324B2 (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4435558B2 (ja) * 2003-12-24 2010-03-17 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 磁気記録媒体
US10276199B1 (en) 2016-06-29 2019-04-30 WD Media, LLC High thermal gradient heatsink for heat assisted magnetic recording media

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4652499A (en) 1986-04-29 1987-03-24 International Business Machines Magnetic recording medium with a chromium alloy underlayer and a cobalt-based magnetic layer
JPH083893B2 (ja) 1987-02-12 1996-01-17 株式会社日立製作所 面内磁気記録媒体
US5733370A (en) 1996-01-16 1998-03-31 Seagate Technology, Inc. Method of manufacturing a bicrystal cluster magnetic recording medium
WO1998006093A1 (en) 1996-05-20 1998-02-12 Hitachi, Ltd. Magnetic recording medium and magnetic storage device using the medium
JP3371062B2 (ja) 1996-11-05 2003-01-27 株式会社日立製作所 磁気記録媒体、その製造方法及び磁気記憶装置
JP3716097B2 (ja) 1998-04-16 2005-11-16 株式会社日立グローバルストレージテクノロジーズ 磁気記録媒体及びそれを用いた磁気記憶装置
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
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

Also Published As

Publication number Publication date
US6756113B2 (en) 2004-06-29
JP2003006841A (ja) 2003-01-10
US20020197515A1 (en) 2002-12-26
US20040213991A1 (en) 2004-10-28

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