TW200512719A - Recording medium and method of making the same - Google Patents

Recording medium and method of making the same

Info

Publication number
TW200512719A
TW200512719A TW093107773A TW93107773A TW200512719A TW 200512719 A TW200512719 A TW 200512719A TW 093107773 A TW093107773 A TW 093107773A TW 93107773 A TW93107773 A TW 93107773A TW 200512719 A TW200512719 A TW 200512719A
Authority
TW
Taiwan
Prior art keywords
layer
recording medium
making
same
recording
Prior art date
Application number
TW093107773A
Other languages
English (en)
Other versions
TWI248062B (en
Inventor
Takeshi Morikawa
Ken Tamanoi
Takuya Kamimura
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 TW200512719A publication Critical patent/TW200512719A/zh
Application granted granted Critical
Publication of TWI248062B publication Critical patent/TWI248062B/zh

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
    • G11B5/73—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
    • G11B5/736—Non-magnetic layer under a soft magnetic layer, e.g. between a substrate and a soft magnetic underlayer [SUL] or a keeper layer
    • G11B5/7361—Two or more non-magnetic layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10584—Record carriers characterised by the selection of the material or by the structure or form characterised by the form, e.g. comprising mechanical protection elements
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
    • 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
    • G11B5/62—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
    • G11B5/7375—Non-polymeric layer under the lowermost magnetic recording layer for heat-assisted or thermally-assisted magnetic recording [HAMR, TAMR]
    • 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
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G11B2005/0021—Thermally assisted recording using an auxiliary energy source for heating the recording layer locally to assist the magnetization reversal
    • 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
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0026—Pulse recording
    • G11B2005/0029—Pulse recording using magnetisation components of the recording layer disposed mainly perpendicularly to the record carrier surface
    • 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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum

Landscapes

  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
TW093107773A 2003-09-30 2004-03-23 Recording medium and method of making the same TWI248062B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003341862A JP3954553B2 (ja) 2003-09-30 2003-09-30 記録媒体およびその製造方法

Publications (2)

Publication Number Publication Date
TW200512719A true TW200512719A (en) 2005-04-01
TWI248062B TWI248062B (en) 2006-01-21

Family

ID=34373474

Family Applications (1)

Application Number Title Priority Date Filing Date
TW093107773A TWI248062B (en) 2003-09-30 2004-03-23 Recording medium and method of making the same

Country Status (4)

Country Link
US (2) US7521135B2 (zh)
JP (1) JP3954553B2 (zh)
CN (1) CN100334638C (zh)
TW (1) TWI248062B (zh)

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US20050166218A1 (en) * 2002-12-24 2005-07-28 Fujitsu Limited Magneto-optical recording medium and method for producing the same
JP2008198238A (ja) * 2005-05-25 2008-08-28 Matsushita Electric Ind Co Ltd 磁気記録媒体とその製造方法、および、磁気記録媒体の記録再生方法
JP4786331B2 (ja) 2005-12-21 2011-10-05 株式会社東芝 磁気抵抗効果素子の製造方法
JP4514721B2 (ja) * 2006-02-09 2010-07-28 株式会社東芝 磁気抵抗効果素子の製造方法、磁気抵抗効果素子、磁気抵抗効果ヘッド、磁気記録再生装置及び磁気記憶装置
WO2007091702A1 (en) 2006-02-10 2007-08-16 Showa Denko K.K. Magnetic recording medium, method for production thereof and magnetic recording and reproducing device
WO2007094481A1 (en) 2006-02-14 2007-08-23 Showa Denko K.K. Magnetic recording medium5 method for production thereof and magnetic recording and reproducing device
JP2007217807A (ja) * 2006-02-15 2007-08-30 Bridgestone Corp スチールコード、ゴム−スチールコード複合体およびタイヤ
JP2007299880A (ja) * 2006-04-28 2007-11-15 Toshiba Corp 磁気抵抗効果素子，および磁気抵抗効果素子の製造方法
JP4550777B2 (ja) * 2006-07-07 2010-09-22 株式会社東芝 磁気抵抗効果素子の製造方法、磁気抵抗効果素子、磁気ヘッド、磁気記録再生装置及び磁気メモリ
JP5044157B2 (ja) * 2006-07-11 2012-10-10 株式会社東芝 磁気抵抗効果素子，磁気ヘッド，および磁気再生装置
JP4388093B2 (ja) 2007-03-27 2009-12-24 株式会社東芝 磁気抵抗効果素子、磁気ヘッド、磁気記録再生装置
JP5032429B2 (ja) * 2008-09-26 2012-09-26 株式会社東芝 磁気抵抗効果素子の製造方法、磁気抵抗効果素子、磁気ヘッドアセンブリ及び磁気記録再生装置
JP5039007B2 (ja) * 2008-09-26 2012-10-03 株式会社東芝 磁気抵抗効果素子の製造方法、磁気抵抗効果素子、磁気ヘッドアセンブリ及び磁気記録再生装置
JP5039006B2 (ja) * 2008-09-26 2012-10-03 株式会社東芝 磁気抵抗効果素子の製造方法、磁気抵抗効果素子、磁気ヘッドアセンブリ及び磁気記録再生装置
JP5032430B2 (ja) * 2008-09-26 2012-09-26 株式会社東芝 磁気抵抗効果素子の製造方法、磁気抵抗効果素子、磁気ヘッドアセンブリ及び磁気記録再生装置
JP2010080839A (ja) 2008-09-29 2010-04-08 Toshiba Corp 磁気抵抗効果素子の製造方法、磁気抵抗効果素子、磁気ヘッドアセンブリおよび磁気記録再生装置
CN103534757B (zh) 2011-05-17 2016-08-17 昭和电工株式会社 磁记录介质及其制造方法以及磁记录再生装置
JP5880686B2 (ja) * 2012-03-22 2016-03-09 富士電機株式会社 熱アシスト磁気記録用の磁気記録媒体
US9263077B2 (en) * 2012-04-09 2016-02-16 Yukiko Kubota Thermal retention structure for a data device
US9940963B1 (en) 2016-11-17 2018-04-10 Western Digital Technologies, Inc. Magnetic media with atom implanted magnetic layer

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CA1188796A (en) * 1981-04-14 1985-06-11 Kenji Yazawa Magnetic recording medium
JPS5930230A (ja) * 1982-08-12 1984-02-17 Sony Corp 金属薄膜型磁気記録媒体
US4788097A (en) * 1986-02-12 1988-11-29 Fuji Photo Film Co., Ltd. Information recording medium
DE69029024T2 (de) * 1989-10-05 1997-04-30 Ibm Magnetischer Dünnfilmspeicher und Verfahren zu seiner Herstellung
US6017620A (en) * 1997-04-10 2000-01-25 Tdk Corporation Magneto-optical recording medium
JPH10320859A (ja) * 1997-05-16 1998-12-04 Sony Corp 光磁気記録媒体
US6177175B1 (en) * 1997-10-16 2001-01-23 Canon Kabushiki Kaisha Magneto-optical medium utilizing domain wall displacement
US6349076B1 (en) * 1998-06-24 2002-02-19 Seagate Technology Llc Magneto-optical recording medium having a protective carbon layer
JP2001023259A (ja) * 1999-07-09 2001-01-26 Sony Corp 光磁気記録媒体およびその製造方法
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JP2002237026A (ja) * 2001-02-08 2002-08-23 Fujitsu Ltd 磁気記録媒体、磁気記録媒体の製造方法、及び、磁気記録装置
JP2003323749A (ja) 2001-03-26 2003-11-14 Hitachi Maxell Ltd 光磁気記録媒体及びその再生方法
JP2002315287A (ja) 2001-04-05 2002-10-25 Matsushita Electric Ind Co Ltd 薄型モータおよびディスク型情報記録再生装置
JP2002352485A (ja) 2001-05-23 2002-12-06 Fujitsu Ltd 光磁気記録媒体
US6937447B2 (en) * 2001-09-19 2005-08-30 Kabushiki Kaisha Toshiba Magnetoresistance effect element, its manufacturing method, magnetic reproducing element and magnetic memory
JP3794953B2 (ja) 2001-12-17 2006-07-12 富士通株式会社 光磁気記録媒体
JP2003223713A (ja) 2002-01-25 2003-08-08 Fujitsu Ltd 情報記録媒体

Also Published As

Publication number Publication date
TWI248062B (en) 2006-01-21
US7521135B2 (en) 2009-04-21
CN100334638C (zh) 2007-08-29
JP3954553B2 (ja) 2007-08-08
CN1604214A (zh) 2005-04-06
US20050068855A1 (en) 2005-03-31
JP2005108347A (ja) 2005-04-21
US20090181166A1 (en) 2009-07-16

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees