JPS56143547A - Magnetooptical storage disk - Google Patents

Magnetooptical storage disk

Info

Publication number
JPS56143547A
JPS56143547A JP4736280A JP4736280A JPS56143547A JP S56143547 A JPS56143547 A JP S56143547A JP 4736280 A JP4736280 A JP 4736280A JP 4736280 A JP4736280 A JP 4736280A JP S56143547 A JPS56143547 A JP S56143547A
Authority
JP
Japan
Prior art keywords
film
disk
recording
thin
amorphous
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.)
Pending
Application number
JP4736280A
Other languages
English (en)
Inventor
Kenji Oota
Akira Takahashi
Toshihisa Deguchi
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.)
Sharp Corp
Original Assignee
Sharp 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
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP4736280A priority Critical patent/JPS56143547A/ja
Priority to US06/237,083 priority patent/US4467383A/en
Publication of JPS56143547A publication Critical patent/JPS56143547A/ja
Priority to US06/585,179 priority patent/US4677601A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/16Layers for recording by changing the magnetic properties, e.g. for Curie-point-writing
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00Recording 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
    • G11B11/10Recording 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
    • G11B11/105Recording 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
    • G11B11/10582Record carriers characterised by the selection of the material or by the structure or form
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00Recording 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
    • G11B11/10Recording 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
    • G11B11/105Recording 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
    • G11B11/10582Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10586Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
    • G11B11/10589Details
    • G11B11/10591Details for improving write-in properties, e.g. Curie-point temperature
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F10/00Thin magnetic films, e.g. of one-domain structure
    • H01F10/08Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
    • H01F10/10Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
    • H01F10/12Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys
    • H01F10/13Amorphous metallic alloys, e.g. glassy metals
    • H01F10/133Amorphous metallic alloys, e.g. glassy metals containing rare earth metals
    • H01F10/135Amorphous metallic alloys, e.g. glassy metals containing rare earth metals containing transition metals
    • H01F10/136Amorphous metallic alloys, e.g. glassy metals containing rare earth metals containing transition metals containing iron

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
JP4736280A 1980-02-23 1980-04-09 Magnetooptical storage disk Pending JPS56143547A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP4736280A JPS56143547A (en) 1980-04-09 1980-04-09 Magnetooptical storage disk
US06/237,083 US4467383A (en) 1980-02-23 1981-02-23 Magnetooptic memory medium
US06/585,179 US4677601A (en) 1980-02-23 1984-03-01 Method of forming permanent memory locations in a magnetooptic memory medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4736280A JPS56143547A (en) 1980-04-09 1980-04-09 Magnetooptical storage disk

Publications (1)

Publication Number Publication Date
JPS56143547A true JPS56143547A (en) 1981-11-09

Family

ID=12772996

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4736280A Pending JPS56143547A (en) 1980-02-23 1980-04-09 Magnetooptical storage disk

Country Status (1)

Country Link
JP (1) JPS56143547A (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58196639A (ja) * 1982-05-10 1983-11-16 Canon Inc 光熱磁気記録媒体
JPS59101050A (ja) * 1982-12-02 1984-06-11 Sony Corp 再生装置
US4569881A (en) * 1983-05-17 1986-02-11 Minnesota Mining And Manufacturing Company Multi-layer amorphous magneto optical recording medium
US4721658A (en) * 1984-04-12 1988-01-26 Minnesota Mining And Manufacturing Company Amorphous magneto optical recording medium
US4833043A (en) * 1983-05-17 1989-05-23 Minnesota Mining And Manufacturing Company Amorphous magneto optical recording medium
US5738950A (en) * 1982-05-10 1998-04-14 Canon Kabushiki Kaisha Magnetooptical recording medium

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58196639A (ja) * 1982-05-10 1983-11-16 Canon Inc 光熱磁気記録媒体
JPH0232690B2 (ja) * 1982-05-10 1990-07-23 Canon Kk
US5738950A (en) * 1982-05-10 1998-04-14 Canon Kabushiki Kaisha Magnetooptical recording medium
JPS59101050A (ja) * 1982-12-02 1984-06-11 Sony Corp 再生装置
US4569881A (en) * 1983-05-17 1986-02-11 Minnesota Mining And Manufacturing Company Multi-layer amorphous magneto optical recording medium
US4833043A (en) * 1983-05-17 1989-05-23 Minnesota Mining And Manufacturing Company Amorphous magneto optical recording medium
US4721658A (en) * 1984-04-12 1988-01-26 Minnesota Mining And Manufacturing Company Amorphous magneto optical recording medium

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