SG114744A1 - Magnetic recording disk with antiferromagnetically-coupled magnetic layer having multiple lower layers - Google Patents

Magnetic recording disk with antiferromagnetically-coupled magnetic layer having multiple lower layers

Info

Publication number
SG114744A1
SG114744A1 SG200501003A SG200501003A SG114744A1 SG 114744 A1 SG114744 A1 SG 114744A1 SG 200501003 A SG200501003 A SG 200501003A SG 200501003 A SG200501003 A SG 200501003A SG 114744 A1 SG114744 A1 SG 114744A1
Authority
SG
Singapore
Prior art keywords
antiferromagnetically
lower layers
recording disk
multiple lower
magnetic recording
Prior art date
Application number
SG200501003A
Other languages
English (en)
Inventor
Van Do Hoa
Edward Fullerton Eric
Margulies David
Moser Andreas
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of SG114744A1 publication Critical patent/SG114744A1/en

Links

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Record Carriers (AREA)
  • Thin Magnetic Films (AREA)
  • Hall/Mr Elements (AREA)
  • Magnetic Heads (AREA)
SG200501003A 2004-02-26 2005-02-22 Magnetic recording disk with antiferromagnetically-coupled magnetic layer having multiple lower layers SG114744A1 (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
SG114744A1 true SG114744A1 (en) 2005-09-28

Family

ID=34750535

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200501003A SG114744A1 (en) 2004-02-26 2005-02-22 Magnetic recording disk with antiferromagnetically-coupled magnetic layer having multiple lower layers

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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60014974T2 (de) 1999-06-08 2005-03-17 Fujitsu Ltd., Kawasaki Magnetisches Aufzeichnungsmittel
US6602612B2 (en) * 1999-06-08 2003-08-05 Fujitsu Limited Magnetic recording medium and magnetic storage apparatus
US6773834B2 (en) 1999-10-08 2004-08-10 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
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
SG96659A1 (en) * 2001-11-08 2003-06-16 Inst Data Storage Laminated antiferromagnetically coupled media for data storage
JP2003263714A (ja) 2002-03-06 2003-09-19 Fujitsu Ltd 磁気記録媒体及び磁気記憶装置
US6893748B2 (en) * 2003-05-20 2005-05-17 Komag, Inc. Soft magnetic film for perpendicular recording disk

Also Published As

Publication number Publication date
CN1661686A (zh) 2005-08-31
KR20060043112A (ko) 2006-05-15
DE602004015563D1 (de) 2008-09-18
US7125616B2 (en) 2006-10-24
US20050190498A1 (en) 2005-09-01
CN100338656C (zh) 2007-09-19
EP1569207A1 (en) 2005-08-31
TW200531037A (en) 2005-09-16
EP1569207B1 (en) 2008-08-06
JP2005243220A (ja) 2005-09-08

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