JPS5727495A - Magneto-optical storage element - Google Patents

Magneto-optical storage element

Info

Publication number
JPS5727495A
JPS5727495A JP10160580A JP10160580A JPS5727495A JP S5727495 A JPS5727495 A JP S5727495A JP 10160580 A JP10160580 A JP 10160580A JP 10160580 A JP10160580 A JP 10160580A JP S5727495 A JPS5727495 A JP S5727495A
Authority
JP
Japan
Prior art keywords
substrate
recording medium
temperature
medium layer
magnetic substance
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
JP10160580A
Other languages
Japanese (ja)
Inventor
Hideyoshi Yamaoka
Akira Takahashi
Kenji Oota
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 JP10160580A priority Critical patent/JPS5727495A/en
Publication of JPS5727495A publication Critical patent/JPS5727495A/en
Pending 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

Abstract

PURPOSE:To enable to use a low macromolecular material as a substrate, by preventing the substrate from the temperature rise even the temperature of a recording media is rised due to laser, through the provision of a recording medium layer via a heat isolation layer on the substrate. CONSTITUTION:On the upper surface of a substrate 4 made of macromolecular material such as acryl, CR-39, polycarbonate, a heat insulation layer 3 is formed, and a recording medium layer 2 in which an amorphous ferri-magnetic substance consisting of rare-earth class such as Sm, Eu, Gd, Tb, Dy, Ho, Er and transition metal such as Fe, Ni, Co with various constitution ratio, or crystal magnetic substance such as MuBi, MiBuCu, is made to thin film, with vacuum deposition method, and a protection film 1 is formed by covering the said recording medium layer 2. Thus, even if the write-in of information is made to the recording medium with laser light, the temperature of substrate is not risen, and use of a conventional glass material which is expensive as the substrate material and difficult to be worked, is made unnecessary.
JP10160580A 1980-07-23 1980-07-23 Magneto-optical storage element Pending JPS5727495A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10160580A JPS5727495A (en) 1980-07-23 1980-07-23 Magneto-optical storage element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10160580A JPS5727495A (en) 1980-07-23 1980-07-23 Magneto-optical storage element

Publications (1)

Publication Number Publication Date
JPS5727495A true JPS5727495A (en) 1982-02-13

Family

ID=14305015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10160580A Pending JPS5727495A (en) 1980-07-23 1980-07-23 Magneto-optical storage element

Country Status (1)

Country Link
JP (1) JPS5727495A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4719137A (en) * 1984-04-13 1988-01-12 Sharp Kabushiki Kaisha Magneto-optic memory element

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5548836A (en) * 1978-09-30 1980-04-08 Pioneer Electronic Corp Signal recording board and recording and reproducing method
JPS5674843A (en) * 1979-11-21 1981-06-20 Fuji Photo Film Co Ltd Photomagnetic recording medium

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5548836A (en) * 1978-09-30 1980-04-08 Pioneer Electronic Corp Signal recording board and recording and reproducing method
JPS5674843A (en) * 1979-11-21 1981-06-20 Fuji Photo Film Co Ltd Photomagnetic recording medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4719137A (en) * 1984-04-13 1988-01-12 Sharp Kabushiki Kaisha Magneto-optic memory element

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