JPH0413779B2 - - Google Patents

Info

Publication number
JPH0413779B2
JPH0413779B2 JP57169707A JP16970782A JPH0413779B2 JP H0413779 B2 JPH0413779 B2 JP H0413779B2 JP 57169707 A JP57169707 A JP 57169707A JP 16970782 A JP16970782 A JP 16970782A JP H0413779 B2 JPH0413779 B2 JP H0413779B2
Authority
JP
Japan
Prior art keywords
magneto
layer
magnetic
present
recording medium
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 - Lifetime
Application number
JP57169707A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5961011A (ja
Inventor
Hajime Machida
Motoharu Tanaka
Atsuyuki Watada
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP57169707A priority Critical patent/JPS5961011A/ja
Priority to DE19833335689 priority patent/DE3335689A1/de
Publication of JPS5961011A publication Critical patent/JPS5961011A/ja
Publication of JPH0413779B2 publication Critical patent/JPH0413779B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative 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
    • G11B11/10586—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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F10/00—Thin magnetic films, e.g. of one-domain structure
    • H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
    • H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
    • H01F10/12—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys
    • H01F10/13—Amorphous metallic alloys, e.g. glassy metals
    • H01F10/133—Amorphous metallic alloys, e.g. glassy metals containing rare earth metals
    • H01F10/135—Amorphous metallic alloys, e.g. glassy metals containing rare earth metals containing transition metals
    • H01F10/137—Amorphous metallic alloys, e.g. glassy metals containing rare earth metals containing transition metals containing cobalt
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G11B2007/24302—Metals or metalloids
    • G11B2007/24306—Metals or metalloids transition metal elements of groups 3-10
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G11B2007/24302—Metals or metalloids
    • G11B2007/24314—Metals or metalloids group 15 elements (e.g. Sb, Bi)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Thin Magnetic Films (AREA)
JP57169707A 1982-09-30 1982-09-30 光磁気記録媒体 Granted JPS5961011A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP57169707A JPS5961011A (ja) 1982-09-30 1982-09-30 光磁気記録媒体
DE19833335689 DE3335689A1 (de) 1982-09-30 1983-09-30 Magneto-optisches aufzeichnungsmaterial

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57169707A JPS5961011A (ja) 1982-09-30 1982-09-30 光磁気記録媒体

Related Child Applications (4)

Application Number Title Priority Date Filing Date
JP2326312A Division JP2612215B2 (ja) 1990-11-28 1990-11-28 光磁気記録媒体
JP2326313A Division JP2544684B2 (ja) 1990-11-28 1990-11-28 光磁気記録媒体
JP32631590A Division JPH03181041A (ja) 1990-11-28 1990-11-28 光磁気記録媒体
JP2326314A Division JP2544685B2 (ja) 1990-11-28 1990-11-28 光磁気記録媒体

Publications (2)

Publication Number Publication Date
JPS5961011A JPS5961011A (ja) 1984-04-07
JPH0413779B2 true JPH0413779B2 (en]) 1992-03-10

Family

ID=15891374

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57169707A Granted JPS5961011A (ja) 1982-09-30 1982-09-30 光磁気記録媒体

Country Status (2)

Country Link
JP (1) JPS5961011A (en])
DE (1) DE3335689A1 (en])

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3348423C2 (de) * 1982-05-10 1994-11-17 Canon Kk Verwendung einer amorphen magnetischen quaternären GdTbFeCo-Legierung für die Herstellung einer magnetooptischen Aufzeichnungsschicht
JPS59104737A (ja) * 1982-12-03 1984-06-16 Seiko Instr & Electronics Ltd 光磁気デイスク
JPS59162250A (ja) * 1983-03-04 1984-09-13 Toshiba Corp 磁性合金
JPS59208706A (ja) * 1983-05-12 1984-11-27 Daido Steel Co Ltd 熱磁気記録材料
US4569881A (en) * 1983-05-17 1986-02-11 Minnesota Mining And Manufacturing Company Multi-layer amorphous magneto optical recording medium
US4615944A (en) * 1983-05-17 1986-10-07 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
US4684454A (en) * 1983-05-17 1987-08-04 Minnesota Mining And Manufacturing Company Sputtering process for making magneto optic alloy
US4721658A (en) * 1984-04-12 1988-01-26 Minnesota Mining And Manufacturing Company Amorphous magneto optical recording medium
JPS59217249A (ja) * 1983-05-25 1984-12-07 Sony Corp 光磁気記録媒体
JPS609855A (ja) * 1983-06-28 1985-01-18 Toshiba Corp 磁性合金
JPS60107751A (ja) * 1983-11-17 1985-06-13 Canon Inc 光熱磁気記録媒体
JP2602425B2 (ja) * 1984-05-01 1997-04-23 株式会社リコー 非晶質磁気光学層
JPH0630300B2 (ja) * 1984-05-01 1994-04-20 株式会社リコー 非晶質磁気光学層
JPH0782943B2 (ja) * 1984-05-04 1995-09-06 株式会社リコー 非晶質磁気光学層
JPH0638370B2 (ja) * 1984-05-22 1994-05-18 株式会社リコー 非晶質磁気光学層
JPH0690813B2 (ja) * 1984-05-26 1994-11-14 株式会社リコー 非晶質磁気光学層
DE3519070A1 (de) * 1984-05-29 1985-12-05 Ricoh Co., Ltd., Tokio/Tokyo Magneto-optisches aufzeichnungsmedium
JPS6122452A (ja) * 1984-07-09 1986-01-31 Kokusai Denshin Denwa Co Ltd <Kdd> 光磁気記録媒体
JP2680586B2 (ja) * 1987-11-26 1997-11-19 シャープ株式会社 光磁気記憶媒体
DE3803000A1 (de) * 1988-02-02 1989-08-10 Basf Ag Flaechenfoermiges, mehrschichtiges magneto-optisches aufzeichnungsmaterial
EP0350010B1 (en) * 1988-07-07 1993-09-29 Oki Electric Industry Co., Ltd. Magneto-optical recording medium
JPH02158939A (ja) * 1988-12-12 1990-06-19 Nikon Corp オーバーライト可能な光磁気記録媒体
JP2660569B2 (ja) * 1989-02-10 1997-10-08 三菱電機株式会社 光磁気記録媒体
US5094925A (en) * 1989-06-30 1992-03-10 Sharp Kabushiki Kaisha Opto-magnetic recording medium
JP2882657B2 (ja) * 1990-02-16 1999-04-12 三菱樹脂株式会社 光磁気記録媒体
JP2617025B2 (ja) * 1990-08-11 1997-06-04 シャープ株式会社 磁気記録媒体とその記録再生方法
JP2544685B2 (ja) * 1990-11-28 1996-10-16 株式会社 リコー 光磁気記録媒体
JP2612215B2 (ja) * 1990-11-28 1997-05-21 株式会社 リコー 光磁気記録媒体
JP2544684B2 (ja) * 1990-11-28 1996-10-16 株式会社 リコー 光磁気記録媒体
JPH05174437A (ja) * 1991-04-30 1993-07-13 Canon Inc 光磁気記録媒体
JPH05182265A (ja) * 1991-04-30 1993-07-23 Canon Inc 光磁気記録媒体
JPH0773516A (ja) * 1993-09-02 1995-03-17 Nikon Corp 光磁気記録媒体及び光磁気記録方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE793138A (fr) * 1971-12-21 1973-04-16 Siemens Ag Couche de memoire magneto-optique
GB1436011A (en) * 1972-08-29 1976-05-19 Ibm Amorphous magnetic material
NL7713503A (en) * 1977-12-07 1979-06-11 Philips Nv Thermomagnetic information recorder e.g. for laser beams - has active layer of gadolinium, iron and holmium, dysprosium or terbium
GB2077065B (en) * 1980-02-23 1985-01-09 Sharp Kk Magnetooptic memory medium
CA1185013A (en) * 1981-01-14 1985-04-02 Kenji Ohta Magneto-optic memory medium
DE3309483C3 (de) * 1982-03-17 2003-02-27 Canon Kk Magnetooptisches Aufzeichnungsmaterial und dessen Verwendung
DE3348423C2 (de) * 1982-05-10 1994-11-17 Canon Kk Verwendung einer amorphen magnetischen quaternären GdTbFeCo-Legierung für die Herstellung einer magnetooptischen Aufzeichnungsschicht
JPS595450A (ja) * 1982-07-02 1984-01-12 Ricoh Co Ltd 光磁気記録媒体

Also Published As

Publication number Publication date
DE3335689C2 (en]) 1992-06-11
JPS5961011A (ja) 1984-04-07
DE3335689A1 (de) 1984-04-05

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