JPS61165847A - Photomagnetic recording medium - Google Patents

Photomagnetic recording medium

Info

Publication number
JPS61165847A
JPS61165847A JP616385A JP616385A JPS61165847A JP S61165847 A JPS61165847 A JP S61165847A JP 616385 A JP616385 A JP 616385A JP 616385 A JP616385 A JP 616385A JP S61165847 A JPS61165847 A JP S61165847A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
tb
nd
kinds
recording medium
rare earth
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
JP616385A
Other versions
JP2619623B2 (en )
Inventor
Akira Aoyama
Shin Funada
Satoshi Nehashi
Tatsuya Shimoda
Satoshi Shimokawado
Mamoru Sugimoto
Original Assignee
Seiko Epson 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

Links

Abstract

PURPOSE: To make possible the manufacture of an alloy target necessary for manufacturing a film having a uniform compsn. by constituting the target of respectively ≥1 kinds among light rare earth metals Sm, Nd, Pr, Ce and heavy rare earth metals Tb, Gd, Dy as well as transition metals Fe, Co, Ni.
CONSTITUTION: This photomagnetic recording medium consists of ≥1 kinds among the light rare earth metals Sm, Nd, Pr, Ce, ≥1 kinds among the transition metals Fe, Ni, Co and ≥1 kinds among the heavy rare earth metals Tb, Gd, Dy and is limited by 0<x≤0.5, 0.1≤y≤0.4 when the compsn. formula is expressed by {(Sm, Nd, Pr, Ce)1-x(Tb, Gd, Dy)x}y(Fe, Co, Ni)1-y. The alloy target can be easily manufactured of such compsn. and the characteristics equal to the characteristics of the photomagnetic recording medium used heretofore are obtainable. The Tb which is costly owing to the scarecity of resources can be replaced with the amply available hence inexpensive Nd and therefore htis recording medium is manufacturable without the run-out of the material which may arise in future if the use of Tb is continued.
COPYRIGHT: (C)1986,JPO&Japio
JP616385A 1985-01-17 1985-01-17 Magneto-optical recording medium Expired - Lifetime JP2619623B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP616385A JP2619623B2 (en) 1985-01-17 1985-01-17 Magneto-optical recording medium

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP616385A JP2619623B2 (en) 1985-01-17 1985-01-17 Magneto-optical recording medium
US07193020 US5100741A (en) 1984-09-12 1988-05-12 Magneto-optic recording systems
US08231866 US5529854A (en) 1984-09-12 1994-04-25 Magneto-optic recording systems

Publications (2)

Publication Number Publication Date
JPS61165847A true true JPS61165847A (en) 1986-07-26
JP2619623B2 JP2619623B2 (en) 1997-06-11

Family

ID=11630858

Family Applications (1)

Application Number Title Priority Date Filing Date
JP616385A Expired - Lifetime JP2619623B2 (en) 1985-01-17 1985-01-17 Magneto-optical recording medium

Country Status (1)

Country Link
JP (1) JP2619623B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62267950A (en) * 1986-05-16 1987-11-20 Sumitomo Electric Ind Ltd Magneto-optical recording medium
WO1988001425A1 (en) * 1986-08-22 1988-02-25 Mitsui Petrochemical Industries, Ltd. Optomagnetic recording medium and process for its manufacture
JPS63164049A (en) * 1986-08-22 1988-07-07 Mitsui Petrochem Ind Ltd Magneto-optical recording medium and its production
JPS63164050A (en) * 1986-08-22 1988-07-07 Mitsui Petrochem Ind Ltd Magneto-optical recording medium and its production
JPS63173249A (en) * 1987-01-13 1988-07-16 Daicel Chem Ind Ltd Magneto-optical recording medium
US5449566A (en) * 1992-09-09 1995-09-12 Mitsubishi Denki Kabushiki Kaisha Overwritable, high-density magneto-optical recording medium and recording/reproduction method therefor
EP1061511A3 (en) * 1999-06-15 2002-02-06 Sharp Kabushiki Kaisha Magnetooptical recording alloy

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178641A (en) * 1983-03-29 1984-10-09 Kokusai Denshin Denwa Co Ltd <Kdd> Photomagnetic recording medium
JPS6115308A (en) * 1984-07-02 1986-01-23 Hitachi Ltd Photomagnetic recording material
JPS6134744A (en) * 1984-07-25 1986-02-19 Hitachi Ltd Photoelectromagnetic recording medium

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178641A (en) * 1983-03-29 1984-10-09 Kokusai Denshin Denwa Co Ltd <Kdd> Photomagnetic recording medium
JPS6115308A (en) * 1984-07-02 1986-01-23 Hitachi Ltd Photomagnetic recording material
JPS6134744A (en) * 1984-07-25 1986-02-19 Hitachi Ltd Photoelectromagnetic recording medium

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62267950A (en) * 1986-05-16 1987-11-20 Sumitomo Electric Ind Ltd Magneto-optical recording medium
WO1988001425A1 (en) * 1986-08-22 1988-02-25 Mitsui Petrochemical Industries, Ltd. Optomagnetic recording medium and process for its manufacture
JPS63164049A (en) * 1986-08-22 1988-07-07 Mitsui Petrochem Ind Ltd Magneto-optical recording medium and its production
JPS63164050A (en) * 1986-08-22 1988-07-07 Mitsui Petrochem Ind Ltd Magneto-optical recording medium and its production
US5053287A (en) * 1986-08-22 1991-10-01 Mitsui Petrochemical Industries, Ltd. Magnetooptical recording media and processes for production thereof
JPS63173249A (en) * 1987-01-13 1988-07-16 Daicel Chem Ind Ltd Magneto-optical recording medium
US5449566A (en) * 1992-09-09 1995-09-12 Mitsubishi Denki Kabushiki Kaisha Overwritable, high-density magneto-optical recording medium and recording/reproduction method therefor
US5764600A (en) * 1992-09-09 1998-06-09 Mitsubishi Denki Kabushiki Kaisha Overwritable, high-density magneto-optical recording medium and recording/reproduction method therefor
EP1061511A3 (en) * 1999-06-15 2002-02-06 Sharp Kabushiki Kaisha Magnetooptical recording alloy

Also Published As

Publication number Publication date Type
JP2619623B2 (en) 1997-06-11 grant

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term