DE3875153T2 - Thermomagnetisches aufzeichnungsverfahren, welches einen energiemodulierten laserstrahl auf eine magnetisch gekoppelte mehrschichtstruktur eines anisotropen magnetfilms anwendet. - Google Patents

Thermomagnetisches aufzeichnungsverfahren, welches einen energiemodulierten laserstrahl auf eine magnetisch gekoppelte mehrschichtstruktur eines anisotropen magnetfilms anwendet.

Info

Publication number
DE3875153T2
DE3875153T2 DE8888106429T DE3875153T DE3875153T2 DE 3875153 T2 DE3875153 T2 DE 3875153T2 DE 8888106429 T DE8888106429 T DE 8888106429T DE 3875153 T DE3875153 T DE 3875153T DE 3875153 T2 DE3875153 T2 DE 3875153T2
Authority
DE
Germany
Prior art keywords
applies
energy
laser beam
layer structure
recording method
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
DE8888106429T
Other languages
English (en)
Other versions
DE3875153D1 (de
Inventor
Katsuhisa Aratani
Ariyoshi Nakaoki
Tomiji Tanaka
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.)
Sony Corp
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 JP62101251A external-priority patent/JP2762435B2/ja
Priority claimed from JP10387487A external-priority patent/JPS63269303A/ja
Application filed by Sony Corp filed Critical Sony Corp
Publication of DE3875153D1 publication Critical patent/DE3875153D1/de
Application granted granted Critical
Publication of DE3875153T2 publication Critical patent/DE3875153T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G11B11/10—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
    • G11B11/10504—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
    • G11B11/10582—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
    • G11B11/10589—Details
    • G11B11/10591—Details for improving write-in properties, e.g. Curie-point temperature
    • 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
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9265—Special properties
    • Y10S428/928—Magnetic property
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12632—Four or more distinct components with alternate recurrence of each type component
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12951—Fe-base component
DE8888106429T 1987-04-24 1988-04-21 Thermomagnetisches aufzeichnungsverfahren, welches einen energiemodulierten laserstrahl auf eine magnetisch gekoppelte mehrschichtstruktur eines anisotropen magnetfilms anwendet. Expired - Fee Related DE3875153T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP62101251A JP2762435B2 (ja) 1987-04-24 1987-04-24 熱磁気記録方法
JP10387487A JPS63269303A (ja) 1987-04-27 1987-04-27 熱磁気記録方法

Publications (2)

Publication Number Publication Date
DE3875153D1 DE3875153D1 (de) 1992-11-12
DE3875153T2 true DE3875153T2 (de) 1993-04-29

Family

ID=26442158

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8888106429T Expired - Fee Related DE3875153T2 (de) 1987-04-24 1988-04-21 Thermomagnetisches aufzeichnungsverfahren, welches einen energiemodulierten laserstrahl auf eine magnetisch gekoppelte mehrschichtstruktur eines anisotropen magnetfilms anwendet.

Country Status (6)

Country Link
US (1) US4878132A (de)
EP (1) EP0288069B1 (de)
CN (1) CN1014474B (de)
AU (1) AU600576B2 (de)
CA (1) CA1314984C (de)
DE (1) DE3875153T2 (de)

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US6028824A (en) * 1986-07-08 2000-02-22 Canon Kabushiki Kaisha Magnetooptical recording medium allowing overwriting with two or more magnetic layers
EP0838814B1 (de) * 1986-07-08 2002-02-27 Canon Kabushiki Kaisha Magnetooptisches Aufzeichnungsmedium mit der Möglichkeit des Überschreibens mit zwei oder mehr Magnetschichten und dieses Medium verwendende Aufzeichnungsmethode
JPS63249953A (ja) * 1987-04-03 1988-10-17 Mitsubishi Electric Corp 光磁気記録再生装置
EP0318925B1 (de) * 1987-11-30 1994-04-20 Sony Corporation Methode zum optischen Abtasten eines Signals aus einem magneto-optischen Speichermedium
JPH01149246A (ja) * 1987-12-04 1989-06-12 Sony Corp 光磁気記録媒体
CA1326547C (en) * 1988-07-13 1994-01-25 Masahiko Kaneko Thermomagnetic recording method
JPH0227548A (ja) * 1988-07-15 1990-01-30 Nikon Corp 小型化されたｏｗ型光磁気記録装置
EP0382859B1 (de) * 1988-08-24 1998-11-04 Mitsubishi Denki Kabushiki Kaisha Magnetooptisches speichermedium
GB2234623B (en) * 1988-11-04 1993-04-14 Ricoh Kk Magneto-optical recording method and magneto-optical recording medium for use in the same
US5233578A (en) * 1988-12-28 1993-08-03 Canon Kabushiki Kaisha Method of recording information on a recording medium having at least two magnetic layers
JP2660569B2 (ja) * 1989-02-10 1997-10-08 三菱電機株式会社 光磁気記録媒体
US5190635A (en) * 1989-04-03 1993-03-02 Ashland Oil, Inc. Superparamagnetic formation of FCC catalyst provides means of separation of old equilibrium fluid cracking catalyst
US5142513A (en) * 1989-04-20 1992-08-25 Victor Company Of Japan, Ltd. Magneto-optical storage medium and magneto-optical overwrite system with magnetic characteristic change by variation of thermal condition for recording information
US5172364A (en) * 1989-08-01 1992-12-15 Mitsubishi Denki Kabushiki Kaisha Magneto-optic recording apparatus with controlled magnetic field generation
US5272684A (en) * 1989-08-01 1993-12-21 Mitsubishi Denki Kabushiki Kaisha Information recording method and information recording apparatus for magneto-optic recording information medium
US5087532A (en) * 1989-08-01 1992-02-11 Minnesota Mining And Manufacturing Company Direct-overwrite magneto-optic media
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
US5512366A (en) * 1989-11-14 1996-04-30 Mitsubishi Denki Kabushiki Kaisha Magneto-optic recording medium and apparatus
KR930009225B1 (ko) * 1989-09-05 1993-09-24 미쯔비시덴기 가부시끼가이샤 광자기 기록 매체, 광자기 기록 장치 및 광자기 기록 매체의 제조방법
JP2884617B2 (ja) * 1989-09-08 1999-04-19 ソニー株式会社 光磁気記録再生方法
US5270994A (en) * 1989-09-08 1993-12-14 Sharp Kabushiki Kaisha Magneto-optical recording and reading method
JP2653523B2 (ja) * 1989-09-08 1997-09-17 シャープ株式会社 光磁気メモリ素子の記録再生方法並びにその装置
JP2835407B2 (ja) * 1989-10-02 1998-12-14 三菱電機株式会社 光磁気記録媒体及び光磁気記録装置
US5258237A (en) * 1989-11-14 1993-11-02 Mitsubishi Denki Kabushiki Kaisha Magneto-optic recording medium
JP2707769B2 (ja) * 1989-11-14 1998-02-04 三菱電機株式会社 光磁気記録媒体及びそれを用いた光磁気記録再生装置
EP0434230B1 (de) * 1989-11-22 1996-05-22 Sharp Kabushiki Kaisha Optisches Aufzeichnungsmedium und Verfahren zur Aufzeichnungs und Wiedergabe von Informationen darauf
US5604046A (en) * 1990-02-23 1997-02-18 Canon Kabushiki Kaisha Magneto-optical recording medium and a method using the same
DE4114234A1 (de) * 1990-05-16 1991-11-21 Mitsubishi Electric Corp Optisches aufnahme- und speichermedium und optische aufnahmevorrichtung
JP2733127B2 (ja) * 1990-08-07 1998-03-30 シャープ株式会社 光磁気記録装置
JP3130929B2 (ja) * 1990-08-10 2001-01-31 ミネソタ マイニング アンド マニュファクチャリング カンパニー 高い記憶密度と直接重ね書きケイパビリティを有する熱磁気記録システム
JPH04134741A (ja) * 1990-09-27 1992-05-08 Nikon Corp ４層膜構造のオーバーライト可能な光磁気記録媒体
US5198098A (en) * 1990-10-19 1993-03-30 Ashland Oil, Inc. Magnetic separation of old from new equilibrium particles by means of manganese addition
US5171424A (en) * 1990-10-22 1992-12-15 Ashland Oil, Inc. Magnetic separation of old from new cracking catalyst by means of heavy rare earth "magnetic hooks"
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JP2672895B2 (ja) * 1991-01-16 1997-11-05 三菱電機株式会社 光磁気記録媒体
US5282095A (en) * 1991-04-24 1994-01-25 U.S. Philips Corporation Direct over-write magneto-optical recording medium having multiple recording layers, and method of recording new information by directly overwriting pre-existing recorded information on such medium
JP2812817B2 (ja) * 1991-07-08 1998-10-22 シャープ株式会社 光磁気記録媒体
JP3359067B2 (ja) * 1991-11-15 2002-12-24 キヤノン株式会社 光磁気記録方法
DE69229776T2 (de) * 1991-11-22 2000-03-09 Seiko Epson Corp Magnetooptische aufzeichnungsmedien
JPH0729231A (ja) * 1992-01-07 1995-01-31 Nikon Corp ５３ｄＢを越えるオーバーライト可能な光磁気記録媒体
US5547751A (en) * 1992-04-10 1996-08-20 Mitsubishi Denki Kabushiki Kaisha Magneto-optical recording medium and method of manufacturing the same
US5361248A (en) * 1992-06-01 1994-11-01 Eastman Kodak Company Direct overwrite magneto-optical storage medium not requiring an initialization magnet
US5702793A (en) * 1993-02-25 1997-12-30 Nippon Steel Corporation Magneto-optical recording medium, disk and method of manufacturing the same
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
US5639567A (en) * 1994-03-09 1997-06-17 Imation Corp. Exchange-coupled direct overwrite magneto-optic recording media
JPH07320331A (ja) 1994-05-26 1995-12-08 Canon Inc 光磁気記録装置
JPH09167388A (ja) * 1995-10-11 1997-06-24 Canon Inc 光磁気記録媒体、該媒体を用いた情報記録再生装置及び情報記録再生方法
US6603619B1 (en) * 1999-01-07 2003-08-05 Sharp Kabushiki Kaisha Magnetic storage medium and heat assisted recording and reproduction method
US6590836B1 (en) * 1999-09-29 2003-07-08 Sanyo Electric Co., Ltd. Magneto optical recording medium capable of preventing a reproduction layer from having a degraded characteristic
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EP0180459B1 (de) * 1984-10-30 1991-12-18 Brother Kogyo Kabushiki Kaisha Magnetooptisches Speichermedium und Gerät zum Schreiben auf und Lesen von dem Medium
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CA1254385A (en) * 1985-07-26 1989-05-23 Noboru Sato Magneto-optical recording medium having amorphous artificially layered structure of rare earth element and transition metal element
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CA1322408C (en) * 1986-08-20 1993-09-21 Tomiji Tanaka Thermomagnetic recording method applying power modulated laser on a magnetically coupled double layer structure of perpendicular anisotropy film

Also Published As

Publication number Publication date
EP0288069A3 (en) 1989-03-29
AU1500188A (en) 1988-10-27
DE3875153D1 (de) 1992-11-12
AU600576B2 (en) 1990-08-16
CN1014474B (zh) 1991-10-23
US4878132A (en) 1989-10-31
CA1314984C (en) 1993-03-23
EP0288069A2 (de) 1988-10-26
EP0288069B1 (de) 1992-10-07
CN88103214A (zh) 1988-11-23

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