Magneto-optical recording medium

Details Magneto-optical recording medium Magneto-optical recording medium

1993-08-26

1995-12-19

Kiliman, L.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428336, 428694MM, 428694ML, 428694RE, 428694NF, 428694XS, 428694DE, 428694RL, 428702, 428704, 428900, 428698, G11B 566

Patent

active

054767130

ABSTRACT:
A magneto-optical recording medium having at least two kinds of films consisting of a rare earth metal-transition metal alloy thin film and a dielectric film formed on a substrate. The dielectric film is formed by sputtering a target in an atmosphere containing at least an oxygen gas or a compound gas containing oxygen as one constitutional element. Particularly, the use of a carbon dioxide gas CO.sub.2 or a carbon monoxide gas CO provides for an SiCON film rather than an Si.sub.3 N.sub.4 film. The SiCON film has a refractive index and an absorptivity almost identical with those of the Si.sub.3 N.sub.4 film, and has a thermal conductivity smaller than that of the Si.sub.3 N.sub.4 film. As a result, it has been found that the SiCON film is advantageous from the viewpoints of a magnetic field sensitivity and a film thickness.

REFERENCES:
patent: 4661420 (1987-04-01), Nakamura et al.

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