CN100338656C - 具有带多重下层的反铁磁耦合磁性层的磁记录盘 - Google Patents

具有带多重下层的反铁磁耦合磁性层的磁记录盘 Download PDF

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Publication number
CN100338656C
CN100338656C CNB2005100064428A CN200510006442A CN100338656C CN 100338656 C CN100338656 C CN 100338656C CN B2005100064428 A CNB2005100064428 A CN B2005100064428A CN 200510006442 A CN200510006442 A CN 200510006442A CN 100338656 C CN100338656 C CN 100338656C
Authority
CN
China
Prior art keywords
ferromagnetic layer
layer
mrt
time
antiferromagnetic coupling
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
CNB2005100064428A
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English (en)
Chinese (zh)
Other versions
CN1661686A (zh
Inventor
霍亚·V·多
埃里克·E·富勒顿
戴维·马古利斯
安德烈亚斯·莫泽
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.)
HGST Netherlands BV
Original Assignee
Hitachi Global Storage Technologies Inc
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 Hitachi Global Storage Technologies Inc filed Critical Hitachi Global Storage Technologies Inc
Publication of CN1661686A publication Critical patent/CN1661686A/zh
Application granted granted Critical
Publication of CN100338656C publication Critical patent/CN100338656C/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • G11B5/678—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 having three or more magnetic 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • 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
    • G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
    • 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
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2508—Magnetic discs
    • 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

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Record Carriers (AREA)
  • Thin Magnetic Films (AREA)
  • Hall/Mr Elements (AREA)
  • Magnetic Heads (AREA)
CNB2005100064428A 2004-02-26 2005-02-01 具有带多重下层的反铁磁耦合磁性层的磁记录盘 Expired - Fee Related CN100338656C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/788,687 2004-02-26
US10/788,687 US7125616B2 (en) 2004-02-26 2004-02-26 Magnetic recording disk with antiferromagnetically-coupled magnetic layer having multiple lower layers

Publications (2)

Publication Number Publication Date
CN1661686A CN1661686A (zh) 2005-08-31
CN100338656C true CN100338656C (zh) 2007-09-19

Family

ID=34750535

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2005100064428A Expired - Fee Related CN100338656C (zh) 2004-02-26 2005-02-01 具有带多重下层的反铁磁耦合磁性层的磁记录盘

Country Status (8)

Country Link
US (1) US7125616B2 (enExample)
EP (1) EP1569207B1 (enExample)
JP (1) JP2005243220A (enExample)
KR (1) KR20060043112A (enExample)
CN (1) CN100338656C (enExample)
DE (1) DE602004015563D1 (enExample)
SG (1) SG114744A1 (enExample)
TW (1) TW200531037A (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7081309B2 (en) * 2004-03-23 2006-07-25 Hitachi Global Storage Technologies Netherlands B.V. Magnetic recording disk with antiferromagnetically-coupled magnetic layer having multiple ferromagnetically-coupled lower layers
US20060210834A1 (en) * 2005-03-18 2006-09-21 Do Hoa V Laminated magnetic thin films with sublayers for magnetic recording
JP2007004907A (ja) * 2005-06-24 2007-01-11 Hitachi Global Storage Technologies Netherlands Bv 磁気記録媒体
JP2007257679A (ja) * 2006-03-20 2007-10-04 Fujitsu Ltd 磁気記録媒体、その製造方法、および磁気記憶装置
JP2007317304A (ja) * 2006-05-25 2007-12-06 Fujitsu Ltd 磁気記録媒体および磁気記憶装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1059629A2 (en) * 1999-06-08 2000-12-13 Fujitsu Limited Magnetic recording medium, magnetic storage apparatus, recording method and method of producing magnetic recording medium
US20030087135A1 (en) * 2001-11-08 2003-05-08 Jian-Ping Wang Laminated antiferromagnetically coupled media for data storage
US20030124390A1 (en) * 1999-06-08 2003-07-03 Fujitsu Limited Magnetic recording medium and magnetic storage apparatus
WO2003065356A1 (en) * 2002-01-29 2003-08-07 Hitachi Global Storage Technologies Netherlands B.V. Laminated magnetic recording media with antiferromagnetically coupled layer as one of the individual magnetic layers in the laminate
EP1343147A2 (en) * 2002-03-06 2003-09-10 Fujitsu Limited Magnetic recording medium and magnetic storage apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6280813B1 (en) * 1999-10-08 2001-08-28 International Business Machines Corporation Magnetic recording media with antiferromagnetically coupled ferromagnetic films as the recording layer
US6835475B2 (en) * 2001-07-26 2004-12-28 Hitachi Global Storage Technologies Netherlands B.V. Dual-layer perpendicular magnetic recording media with laminated underlayer formed with antiferromagnetically coupled films
US6893748B2 (en) * 2003-05-20 2005-05-17 Komag, Inc. Soft magnetic film for perpendicular recording disk

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1059629A2 (en) * 1999-06-08 2000-12-13 Fujitsu Limited Magnetic recording medium, magnetic storage apparatus, recording method and method of producing magnetic recording medium
US20030124390A1 (en) * 1999-06-08 2003-07-03 Fujitsu Limited Magnetic recording medium and magnetic storage apparatus
US20030087135A1 (en) * 2001-11-08 2003-05-08 Jian-Ping Wang Laminated antiferromagnetically coupled media for data storage
WO2003065356A1 (en) * 2002-01-29 2003-08-07 Hitachi Global Storage Technologies Netherlands B.V. Laminated magnetic recording media with antiferromagnetically coupled layer as one of the individual magnetic layers in the laminate
EP1343147A2 (en) * 2002-03-06 2003-09-10 Fujitsu Limited Magnetic recording medium and magnetic storage apparatus
US20030170499A1 (en) * 2002-03-06 2003-09-11 Fujitsu Limited Magnetic recording medium and magnetic storage apparatus

Also Published As

Publication number Publication date
CN1661686A (zh) 2005-08-31
KR20060043112A (ko) 2006-05-15
SG114744A1 (en) 2005-09-28
DE602004015563D1 (de) 2008-09-18
US7125616B2 (en) 2006-10-24
US20050190498A1 (en) 2005-09-01
EP1569207A1 (en) 2005-08-31
TW200531037A (en) 2005-09-16
EP1569207B1 (en) 2008-08-06
JP2005243220A (ja) 2005-09-08

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C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: HGST NETHERLANDS BV

Free format text: FORMER NAME: HITACHI GLOBAL STORAGE TECH

CP01 Change in the name or title of a patent holder

Address after: Amsterdam

Patentee after: Hitachi Global Storage Technologies Netherlands B. V.

Address before: Amsterdam

Patentee before: Hitachi Global Storage Tech

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20070919

Termination date: 20150201

EXPY Termination of patent right or utility model