CA2292025A1 - Magneto-optical recording medium and method for producing same - Google Patents

Magneto-optical recording medium and method for producing same Download PDF

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Publication number
CA2292025A1
CA2292025A1 CA 2292025 CA2292025A CA2292025A1 CA 2292025 A1 CA2292025 A1 CA 2292025A1 CA 2292025 CA2292025 CA 2292025 CA 2292025 A CA2292025 A CA 2292025A CA 2292025 A1 CA2292025 A1 CA 2292025A1
Authority
CA
Canada
Prior art keywords
magneto
recording layer
recording medium
optical recording
recording
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
CA 2292025
Other languages
French (fr)
Other versions
CA2292025C (en
Inventor
Masahiro Kikkawa
Takashi Kishi
Etsuro Ikeda
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.)
Sony Corp
Original Assignee
Masahiro Kikkawa
Takashi Kishi
Etsuro Ikeda
Sony Corporation
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
Priority claimed from JP03059567A external-priority patent/JP3122151B2/en
Application filed by Masahiro Kikkawa, Takashi Kishi, Etsuro Ikeda, Sony Corporation filed Critical Masahiro Kikkawa
Publication of CA2292025A1 publication Critical patent/CA2292025A1/en
Application granted granted Critical
Publication of CA2292025C publication Critical patent/CA2292025C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

In a magneto-optical recording medium having a substrate, a recording layer having at least a rare earth - transition metal alloy film formed on the substrate, and a dielectric layer formed on the recording layer, a depth of an area in the recording layer containing an element derived from the dielectric layer is set to 70 .ANG. or less from an interface between the recording layer and the dielectric layer in a depth-directional film structure analysis by Auger electron spectroscopy. Accordingly, mixing of impurities into the recording layer can be suppressed to thereby lower a recording magnetic field.
CA002292025A 1991-02-28 1992-02-27 Magneto-optical recording medium and method for producing same Expired - Fee Related CA2292025C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JPP058014/91 1991-02-28
JP5801491 1991-02-28
JP03059567A JP3122151B2 (en) 1991-02-28 1991-03-01 Magneto-optical recording medium
JPP059567/91 1991-03-01
CA002061954A CA2061954C (en) 1991-02-28 1992-02-27 Magneto-optical recording medium and method for producing same

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002061954A Division CA2061954C (en) 1991-02-28 1992-02-27 Magneto-optical recording medium and method for producing same

Publications (2)

Publication Number Publication Date
CA2292025A1 true CA2292025A1 (en) 1992-08-29
CA2292025C CA2292025C (en) 2000-11-28

Family

ID=31891660

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002292025A Expired - Fee Related CA2292025C (en) 1991-02-28 1992-02-27 Magneto-optical recording medium and method for producing same

Country Status (1)

Country Link
CA (1) CA2292025C (en)

Also Published As

Publication number Publication date
CA2292025C (en) 2000-11-28

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