ATE188801T1 - Methode zur thermomagnetischen aufzeichnung - Google Patents

Methode zur thermomagnetischen aufzeichnung

Info

Publication number
ATE188801T1
ATE188801T1 AT96107608T AT96107608T ATE188801T1 AT E188801 T1 ATE188801 T1 AT E188801T1 AT 96107608 T AT96107608 T AT 96107608T AT 96107608 T AT96107608 T AT 96107608T AT E188801 T1 ATE188801 T1 AT E188801T1
Authority
AT
Austria
Prior art keywords
thin film
magnetic
magnetic thin
temperature
medium
Prior art date
Application number
AT96107608T
Other languages
English (en)
Inventor
Masahiko Kaneko
Katsuhisa Aratani
Yoshihiro Muto
Original Assignee
Sony Corp
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
Priority claimed from JP63174695A external-priority patent/JP2829970B2/ja
Priority claimed from JP63272400A external-priority patent/JP2805070B2/ja
Priority claimed from JP1006454A external-priority patent/JP2805787B2/ja
Priority claimed from JP1006453A external-priority patent/JP2797360B2/ja
Application filed by Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of ATE188801T1 publication Critical patent/ATE188801T1/de

Links

Classifications

    • 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
    • G11B11/03—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 deforming with non-mechanical means, e.g. laser, beam of particles
    • 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
    • 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
    • G11B11/10502—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 characterised by the transducing operation to be executed
    • G11B11/10504—Recording
    • G11B11/10506—Recording by modulating only the light beam of the transducer
    • 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
    • G11B11/10502—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 characterised by the transducing operation to be executed
    • G11B11/10517—Overwriting or erasing
    • G11B11/10519—Direct overwriting, i.e. performing erasing and recording using the same transducing means
    • 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
    • G11B11/10502—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 characterised by the transducing operation to be executed
    • G11B11/10517—Overwriting or erasing
    • G11B11/10519—Direct overwriting, i.e. performing erasing and recording using the same transducing means
    • G11B11/10521—Direct overwriting, i.e. performing erasing and recording using the same transducing means using a single light spot
    • 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
    • G11B11/10502—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 characterised by the transducing operation to be executed
    • G11B11/10523—Initialising
    • 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
    • G11B11/10502—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 characterised by the transducing operation to be executed
    • G11B11/10528—Shaping of magnetic domains, e.g. form, dimensions

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Hard Magnetic Materials (AREA)
  • Paints Or Removers (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
AT96107608T 1988-07-13 1989-07-12 Methode zur thermomagnetischen aufzeichnung ATE188801T1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP63174695A JP2829970B2 (ja) 1988-07-13 1988-07-13 熱磁気記録媒体
JP63272400A JP2805070B2 (ja) 1988-10-28 1988-10-28 熱磁気記録方法
JP1006454A JP2805787B2 (ja) 1989-01-13 1989-01-13 光磁気記録方法
JP1006453A JP2797360B2 (ja) 1989-01-13 1989-01-13 光磁気記録方法

Publications (1)

Publication Number Publication Date
ATE188801T1 true ATE188801T1 (de) 2000-01-15

Family

ID=27454492

Family Applications (3)

Application Number Title Priority Date Filing Date
AT98122628T ATE241198T1 (de) 1988-07-13 1989-07-12 Verfahren zur thermomagnetischen aufzeichnung
AT96107608T ATE188801T1 (de) 1988-07-13 1989-07-12 Methode zur thermomagnetischen aufzeichnung
AT89112754T ATE148577T1 (de) 1988-07-13 1989-07-12 Methode zur thermomagnetischen aufzeichnung

Family Applications Before (1)

Application Number Title Priority Date Filing Date
AT98122628T ATE241198T1 (de) 1988-07-13 1989-07-12 Verfahren zur thermomagnetischen aufzeichnung

Family Applications After (1)

Application Number Title Priority Date Filing Date
AT89112754T ATE148577T1 (de) 1988-07-13 1989-07-12 Methode zur thermomagnetischen aufzeichnung

Country Status (7)

Country Link
US (1) US5379275A (de)
EP (3) EP0352548B1 (de)
KR (1) KR900002264A (de)
AT (3) ATE241198T1 (de)
AU (1) AU626073B2 (de)
CA (1) CA1326547C (de)
DE (3) DE68929136T2 (de)

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JP2503708B2 (ja) * 1989-11-14 1996-06-05 三菱電機株式会社 光磁気記録媒体及び装置
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US5273835A (en) * 1989-09-25 1993-12-28 Nikon Corporation Over-write capable magnetooptical recording medium
US5258237A (en) * 1989-11-14 1993-11-02 Mitsubishi Denki Kabushiki Kaisha Magneto-optic recording medium
JPH03156752A (ja) * 1989-11-14 1991-07-04 Mitsubishi Electric Corp 光磁気記録媒体
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JP2910287B2 (ja) * 1990-12-19 1999-06-23 ソニー株式会社 光磁気記録媒体
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JP2812817B2 (ja) * 1991-07-08 1998-10-22 シャープ株式会社 光磁気記録媒体
JP2763419B2 (ja) * 1991-07-08 1998-06-11 シャープ株式会社 光磁気記録媒体
EP0523944A3 (en) * 1991-07-16 1994-02-16 Canon Kk Magneto optical recording medium and method
US5498485A (en) * 1992-01-21 1996-03-12 Sharp Kabushiki Kaisha Magneto-optical recording medium and manufacturing method thereof
JPH05198028A (ja) * 1992-01-21 1993-08-06 Sharp Corp 光磁気記録媒体
US5547751A (en) * 1992-04-10 1996-08-20 Mitsubishi Denki Kabushiki Kaisha Magneto-optical recording medium and method of manufacturing the same
USRE38501E1 (en) * 1992-08-28 2004-04-20 Canon Kabushiki Kaisha Magnetooptical recording medium and information recording and reproducing methods using the recording medium
DE69331924T2 (de) * 1992-08-28 2002-10-10 Canon K.K., Tokio/Tokyo Magnetooptisches Aufzeichnungsmedium und Informationsaufzeichungs- und Wiedergabeverfahren damit
JP2986622B2 (ja) * 1992-09-02 1999-12-06 シャープ株式会社 光磁気メモリー素子およびその記録再生方法
JP2938284B2 (ja) * 1992-10-06 1999-08-23 シャープ株式会社 光磁気記録媒体及びこれを用いた記録再生方法
JPH06131722A (ja) * 1992-10-16 1994-05-13 Canon Inc 光磁気記録媒体およびその記録方法
US6665235B2 (en) 1992-11-06 2003-12-16 Sharp Kabushiki Kaisha Magneto-optical recording medium and recording and reproducing method and optical head designed for the magneto-optical recording medium
DE69331926T2 (de) 1992-11-06 2002-11-28 Sharp K.K., Osaka Magnetooptischer Aufzeichungsträger, Aufzeichnungs- und Wiedergabemethode sowie für diesen magnetooptischen Aufzeichnungsträger entworfener optischer Abtastkopf
JP3092363B2 (ja) * 1992-12-01 2000-09-25 松下電器産業株式会社 光磁気記録媒体
JP2954440B2 (ja) * 1993-01-22 1999-09-27 シャープ株式会社 光磁気記録媒体および光磁気記録方法
US5662988A (en) * 1993-01-22 1997-09-02 Sharp Kabushiki Kaisha Magneto-optical recording medium
JPH06251443A (ja) * 1993-02-25 1994-09-09 Sharp Corp 光磁気記録媒体
US5719829A (en) * 1993-03-04 1998-02-17 Canon Kabushiki Kaisha Magnetooptical recording medium allowing super-resolution, and information reproduction method using the medium
JP3297513B2 (ja) * 1993-03-04 2002-07-02 キヤノン株式会社 光磁気記録媒体及び該媒体を用いた情報再生方法
EP1158509A3 (de) * 1993-04-02 2002-01-02 Canon Kabushiki Kaisha Magnetooptisches Aufzeichnungsverfahren
CA2128964C (en) * 1993-07-29 1998-11-10 Yoichi Osato Magnetooptical recording medium and recording/reproduction method for medium
JP2809991B2 (ja) 1994-01-14 1998-10-15 富士通株式会社 光磁気記録媒体及び該媒体に記録された情報の再生方法
CA2142767C (en) 1994-02-21 1998-11-17 Naoki Nishimura Magneto-optical recording medium, and information reproducing method using the medium
JPH07244876A (ja) * 1994-03-01 1995-09-19 Sharp Corp 光磁気記録媒体及び光磁気記録再生方法
JP3354726B2 (ja) * 1994-09-27 2002-12-09 松下電器産業株式会社 光磁気記録媒体及び再生方法
JPH09120595A (ja) * 1995-10-23 1997-05-06 Sharp Corp 光磁気記録媒体
JP3400251B2 (ja) * 1996-07-30 2003-04-28 シャープ株式会社 光磁気記録媒体の再生方法及び光磁気記録媒体
US5903526A (en) * 1996-09-20 1999-05-11 Victor Company Of Japan, Ltd. Magneto-optical recording medium having multiple magnetic layers
JP3245704B2 (ja) * 1996-10-18 2002-01-15 富士通株式会社 光磁気記録媒体及びその製造方法
JP4350312B2 (ja) * 2001-01-12 2009-10-21 キヤノン株式会社 磁壁移動型光磁気記録媒体および情報再生方法
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JPS6352355A (ja) * 1986-08-20 1988-03-05 Sony Corp 熱磁気記録方法
JPS6352354A (ja) * 1986-08-20 1988-03-05 Sony Corp 熱磁気記録方法
JPH0782674B2 (ja) * 1986-11-06 1995-09-06 キヤノン株式会社 光磁気メモリ用媒体
JPS63249951A (ja) * 1987-04-03 1988-10-17 Mitsubishi Electric Corp 光磁気記録情報担体
AU600576B2 (en) * 1987-04-24 1990-08-16 Sony Corporation Thermomagnetic recording method applying power modulated laser on a magnetically coupled multi-layer structure of perpendicular anisotropy magnetic film
JP2754537B2 (ja) * 1987-05-18 1998-05-20 株式会社ニコン 光磁気記録媒体並びにそれを使用したビット形成方法
JPS63304448A (ja) * 1987-06-04 1988-12-12 Nippon Telegr & Teleph Corp <Ntt> 光磁気記録媒体

Also Published As

Publication number Publication date
CA1326547C (en) 1994-01-25
EP0352548B1 (de) 1997-01-29
EP0352548A3 (de) 1992-09-02
EP0901121A2 (de) 1999-03-10
EP0352548A2 (de) 1990-01-31
EP0901121A3 (de) 2000-12-06
ATE241198T1 (de) 2003-06-15
DE68929136D1 (de) 2000-02-17
ATE148577T1 (de) 1997-02-15
AU3795689A (en) 1990-01-18
DE68929136T2 (de) 2000-06-21
DE68927725D1 (de) 1997-03-13
KR900002264A (ko) 1990-02-28
DE68929469T2 (de) 2004-03-18
EP0735531B1 (de) 2000-01-12
AU626073B2 (en) 1992-07-23
EP0901121B1 (de) 2003-05-21
DE68927725T2 (de) 1997-08-14
EP0735531A1 (de) 1996-10-02
US5379275A (en) 1995-01-03
DE68929469D1 (de) 2003-06-26

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