JPS6476549A - Multiple layer magneto-optical recording medium with controlled force between magnetic layers interchangeable coupling - Google Patents

Multiple layer magneto-optical recording medium with controlled force between magnetic layers interchangeable coupling

Info

Publication number
JPS6476549A
JPS6476549A JP62234388A JP23438887A JPS6476549A JP S6476549 A JPS6476549 A JP S6476549A JP 62234388 A JP62234388 A JP 62234388A JP 23438887 A JP23438887 A JP 23438887A JP S6476549 A JPS6476549 A JP S6476549A
Authority
JP
Japan
Prior art keywords
magnetic
recording medium
optical recording
interchangeable coupling
multiple layer
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.)
Granted
Application number
JP62234388A
Other languages
Japanese (ja)
Other versions
JP2535952B2 (en
Inventor
Hiroyuki Matsumoto
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.)
Nikon Corp
Original Assignee
Nikon 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 Nikon Corp filed Critical Nikon Corp
Priority to JP23438887A priority Critical patent/JP2535952B2/en
Publication of JPS6476549A publication Critical patent/JPS6476549A/en
Application granted granted Critical
Publication of JP2535952B2 publication Critical patent/JP2535952B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B11/10582—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

Abstract

PURPOSE:To prevent a case that the magnetization of the magnetic layer of an opposite side is easy to be inverted from being generated due to an excessive interchangeable coupling force in case of using an over-writable medium by attaching a non-magnetic element in the magnetic layer of a multiple layer magneto-optical recording medium, and controlling the interchangeable coupling force at a prescribed value corresponding to a quantity to be attached. CONSTITUTION:In the multiple layer magneto-optical recording medium, the non-magnetic element is attached on either or both adjacent two magnetic layers 1 and 2. As the non-magnetic element, for example, an Si or a Ge, etc., is used. The interchangeable coupling force is controlled by extending a distance between magnetic atoms between layers substantially by attaching the non- magnetic element in the magnetic layers 1 and 2 and decreasing an interchangeable mutual function by decreasing the number of magnetic atoms most adjacent to each other. In such a way, it is possible to prevent the excessive interchangeable coupling force from being generated between the magnetic layers 1 and 2 in the overwritable magneto-optical recording medium.
JP23438887A 1987-09-18 1987-09-18 Multilayer magneto-optical recording medium with controlled exchange coupling force between magnetic layers Expired - Lifetime JP2535952B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23438887A JP2535952B2 (en) 1987-09-18 1987-09-18 Multilayer magneto-optical recording medium with controlled exchange coupling force between magnetic layers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23438887A JP2535952B2 (en) 1987-09-18 1987-09-18 Multilayer magneto-optical recording medium with controlled exchange coupling force between magnetic layers

Publications (2)

Publication Number Publication Date
JPS6476549A true JPS6476549A (en) 1989-03-22
JP2535952B2 JP2535952B2 (en) 1996-09-18

Family

ID=16970216

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23438887A Expired - Lifetime JP2535952B2 (en) 1987-09-18 1987-09-18 Multilayer magneto-optical recording medium with controlled exchange coupling force between magnetic layers

Country Status (1)

Country Link
JP (1) JP2535952B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990002400A1 (en) * 1988-08-24 1990-03-08 Mitsubishi Denki Kabushiki Kaisha Magnetooptical recording medium and method of producing the same
JPH02273347A (en) * 1989-04-13 1990-11-07 Nec Corp Magneto-optical recording medium
WO1994003892A1 (en) * 1992-07-29 1994-02-17 Seiko Epson Corporation Magneto-optic recording medium and method of its manufacture method
US5512366A (en) * 1989-11-14 1996-04-30 Mitsubishi Denki Kabushiki Kaisha Magneto-optic recording medium and apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990002400A1 (en) * 1988-08-24 1990-03-08 Mitsubishi Denki Kabushiki Kaisha Magnetooptical recording medium and method of producing the same
US5216663A (en) * 1988-08-24 1993-06-01 Mitsubishi Denki Kabushiki Kaisha Magneto-optic recording medium and manufacturing method
JPH02273347A (en) * 1989-04-13 1990-11-07 Nec Corp Magneto-optical recording medium
US5512366A (en) * 1989-11-14 1996-04-30 Mitsubishi Denki Kabushiki Kaisha Magneto-optic recording medium and apparatus
WO1994003892A1 (en) * 1992-07-29 1994-02-17 Seiko Epson Corporation Magneto-optic recording medium and method of its manufacture method
US5772856A (en) * 1992-07-29 1998-06-30 Seiko Epson Corporation Magneto-optical recording medium and method of manufacturing the same

Also Published As

Publication number Publication date
JP2535952B2 (en) 1996-09-18

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