SG141328A1 - Perpendicular magnetic recording medium - Google Patents

Perpendicular magnetic recording medium

Info

Publication number
SG141328A1
SG141328A1 SG200706335-7A SG2007063357A SG141328A1 SG 141328 A1 SG141328 A1 SG 141328A1 SG 2007063357 A SG2007063357 A SG 2007063357A SG 141328 A1 SG141328 A1 SG 141328A1
Authority
SG
Singapore
Prior art keywords
layer
magnetic recording
recording medium
nonmagnetic
soft underlayer
Prior art date
Application number
SG200706335-7A
Other languages
English (en)
Inventor
Takenoiri Shunji
Sakai Yasushi
Original Assignee
Fuji Elec Device Tech Co 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 Fuji Elec Device Tech Co Ltd filed Critical Fuji Elec Device Tech Co Ltd
Publication of SG141328A1 publication Critical patent/SG141328A1/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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
    • 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
    • G11B5/657—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing inorganic, non-oxide compound of Si, N, P, B, H or C, e.g. in metal alloy or compound
    • 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
    • G11B5/658—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing oxygen, e.g. molecular oxygen or magnetic oxide
    • 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
    • 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
    • G11B5/7373—Non-magnetic single underlayer comprising chromium

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Magnetic Record Carriers (AREA)
  • Thin Magnetic Films (AREA)
SG200706335-7A 2006-09-13 2007-08-27 Perpendicular magnetic recording medium SG141328A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006248628A JP4771222B2 (ja) 2006-09-13 2006-09-13 垂直磁気記録媒体

Publications (1)

Publication Number Publication Date
SG141328A1 true SG141328A1 (en) 2008-04-28

Family

ID=39169374

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200706335-7A SG141328A1 (en) 2006-09-13 2007-08-27 Perpendicular magnetic recording medium

Country Status (5)

Country Link
US (1) US7781080B2 (ja)
JP (1) JP4771222B2 (ja)
CN (1) CN101145351B (ja)
MY (1) MY145525A (ja)
SG (1) SG141328A1 (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8659852B2 (en) * 2008-04-21 2014-02-25 Seagate Technology Llc Write-once magentic junction memory array
US8045366B2 (en) 2008-11-05 2011-10-25 Seagate Technology Llc STRAM with composite free magnetic element
US9093101B2 (en) * 2011-02-28 2015-07-28 Seagate Technology Llc Stack including a magnetic zero layer
JP5768494B2 (ja) * 2011-05-19 2015-08-26 ソニー株式会社 記憶素子、記憶装置
JP7011477B2 (ja) * 2017-03-07 2022-01-26 昭和電工株式会社 アシスト磁気記録媒体及び磁気記憶装置
JP7107765B2 (ja) * 2018-06-25 2022-07-27 昭和電工株式会社 アシスト磁気記録媒体および磁気記憶装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06103553A (ja) 1992-09-18 1994-04-15 Fujitsu Ltd 垂直磁気記録媒体とその製造方法
JP2947029B2 (ja) 1993-09-13 1999-09-13 日本ビクター株式会社 垂直磁気記録媒体
KR100371453B1 (ko) * 1999-03-15 2003-02-06 가부시끼가이샤 도시바 자기 기록 장치 및 자기 기록 방법
JP4034485B2 (ja) 1999-11-30 2008-01-16 株式会社東芝 磁気記録媒体
JP3340420B2 (ja) * 2000-05-29 2002-11-05 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
JP4917200B2 (ja) 2000-12-01 2012-04-18 富士電機株式会社 垂直磁気記録媒体およびその製造方法
US6740398B2 (en) * 2001-01-24 2004-05-25 Seagate Technology Llc Magnetic films including iridium, manganese and nitrogen
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
JP3911678B2 (ja) * 2002-10-01 2007-05-09 富士通株式会社 多層垂直磁気記録媒体
JP2006018876A (ja) * 2004-06-30 2006-01-19 Toshiba Corp 垂直磁気記録装置
JP4540557B2 (ja) 2004-07-05 2010-09-08 富士電機デバイステクノロジー株式会社 垂直磁気記録媒体
US7588842B1 (en) * 2004-09-02 2009-09-15 Maxtor Corporation Perpendicular magnetic recording medium with a pinned soft underlayer
US20060147758A1 (en) * 2005-01-06 2006-07-06 Hong-Sik Jung Perpendicular magnetic recording medium with magnetically resetable single domain soft magnetic underlayer
JP2007026514A (ja) * 2005-07-14 2007-02-01 Hoya Corp 垂直磁気記録媒体、及びその製造方法
JP2007273055A (ja) * 2006-03-31 2007-10-18 Fujitsu Ltd 垂直磁気記録媒体および磁気記憶装置

Also Published As

Publication number Publication date
JP2008071406A (ja) 2008-03-27
US20080062583A1 (en) 2008-03-13
MY145525A (en) 2012-02-29
JP4771222B2 (ja) 2011-09-14
CN101145351A (zh) 2008-03-19
CN101145351B (zh) 2011-04-13
US7781080B2 (en) 2010-08-24

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