JPS5712428A - Magnetooptic storage element - Google Patents

Magnetooptic storage element

Info

Publication number
JPS5712428A
JPS5712428A JP8569580A JP8569580A JPS5712428A JP S5712428 A JPS5712428 A JP S5712428A JP 8569580 A JP8569580 A JP 8569580A JP 8569580 A JP8569580 A JP 8569580A JP S5712428 A JPS5712428 A JP S5712428A
Authority
JP
Japan
Prior art keywords
film
vapor
increased
constitution
storage element
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
JP8569580A
Other languages
Japanese (ja)
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 JP8569580A priority Critical patent/JPS5712428A/en
Priority to US06/275,388 priority patent/US4414650A/en
Priority to FR8112234A priority patent/FR2485241B1/en
Priority to GB8119345A priority patent/GB2081537B/en
Priority to DE3124573A priority patent/DE3124573C2/en
Publication of JPS5712428A publication Critical patent/JPS5712428A/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

Abstract

PURPOSE:To increase the SN with a simple constitution, by forming a magnetooptic storage thin film on a reflector having a sufficient reflectivity to the light used for reproduction of information. CONSTITUTION:For instance, an Au vapor-deposited film 2 is formed on a substrate 1 of glass, synthetic resin and the like, and an amorphous ferrimagnetic substance thin film 3 of GdTbFe, GdDyFe, TbFe, DyTbFe and the like is formed on the film 2. Furthermore, an SiO2 protective film of about 1,000Angstrom is formed on the film 3. With formation of the vapor-deposited film 2, the Kerr rotational angle is increased to 0.5 deg. from 0.15 deg.. In such way, the SN can be increased with a simple constitution.
JP8569580A 1980-06-23 1980-06-23 Magnetooptic storage element Pending JPS5712428A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP8569580A JPS5712428A (en) 1980-06-23 1980-06-23 Magnetooptic storage element
US06/275,388 US4414650A (en) 1980-06-23 1981-06-19 Magneto-optic memory element
FR8112234A FR2485241B1 (en) 1980-06-23 1981-06-22 MAGNETO-OPTICAL MEMORY ELEMENT
GB8119345A GB2081537B (en) 1980-06-23 1981-06-23 Magneto-optic memory element
DE3124573A DE3124573C2 (en) 1980-06-23 1981-06-23 Magneto-optical storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8569580A JPS5712428A (en) 1980-06-23 1980-06-23 Magnetooptic storage element

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP23563283A Division JPS59132434A (en) 1983-12-12 1983-12-12 Magneto-optic storage element
JP23155384A Division JPS60131660A (en) 1984-11-01 1984-11-01 Magneto-optical memory element

Publications (1)

Publication Number Publication Date
JPS5712428A true JPS5712428A (en) 1982-01-22

Family

ID=13865960

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8569580A Pending JPS5712428A (en) 1980-06-23 1980-06-23 Magnetooptic storage element

Country Status (1)

Country Link
JP (1) JPS5712428A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58125251A (en) * 1982-01-21 1983-07-26 Nippon Hoso Kyokai <Nhk> Optical and magnetic recording medium
JPS5954056A (en) * 1982-09-21 1984-03-28 Sharp Corp Magnetooptic storage element
WO1984002602A1 (en) * 1982-12-23 1984-07-05 Sony Corp Thermomagnetic optical recording method
JPH03178062A (en) * 1989-12-07 1991-08-02 Fujitsu Ltd Optical disk
US5095350A (en) * 1989-04-07 1992-03-10 Sharp Kabushiki Kaisha Magneto-optic memory medium
JPH05242540A (en) * 1992-11-02 1993-09-21 Sharp Corp Magneto-optical memory element
US5305254A (en) * 1987-12-15 1994-04-19 Sharp Kabushiki Kaisha Magneto-optic memory device
JPH06295482A (en) * 1993-02-22 1994-10-21 Digital Equip Corp <Dec> Both side optical medium for disk storage device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58125251A (en) * 1982-01-21 1983-07-26 Nippon Hoso Kyokai <Nhk> Optical and magnetic recording medium
JPH0234096B2 (en) * 1982-01-21 1990-08-01 Japan Broadcasting Corp
JPS5954056A (en) * 1982-09-21 1984-03-28 Sharp Corp Magnetooptic storage element
JPH0479075B2 (en) * 1982-09-21 1992-12-14 Sharp Kk
WO1984002602A1 (en) * 1982-12-23 1984-07-05 Sony Corp Thermomagnetic optical recording method
US5305254A (en) * 1987-12-15 1994-04-19 Sharp Kabushiki Kaisha Magneto-optic memory device
US5095350A (en) * 1989-04-07 1992-03-10 Sharp Kabushiki Kaisha Magneto-optic memory medium
JPH03178062A (en) * 1989-12-07 1991-08-02 Fujitsu Ltd Optical disk
JPH05242540A (en) * 1992-11-02 1993-09-21 Sharp Corp Magneto-optical memory element
JPH06295482A (en) * 1993-02-22 1994-10-21 Digital Equip Corp <Dec> Both side optical medium for disk storage device

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