Magneto-optical recording medium

Details Magneto-optical recording medium Magneto-optical recording medium

1993-11-03

1996-05-07

Kiliman, Leszek

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428 643, 428336, 428694DE, 428694RL, 428694SC, 428694MT, 428694RE, 428900, 360131, 360135, 365122, 369 13, 369 14, B32B 302, B32B 516, G11B 566

Patent

active

055144683

ABSTRACT:
A magneto-optical recording medium having a layered structure consisting of a first dielectric layer, magnetic recording layer, second dielectric layer and reflecting layer successively formed on a transparent substrate plate can be imparted with improved performance relative to the recording sensitivity and the C/N ratio when the recording layer and the second dielectric layer each have such a thickness that the angle .delta. given by the equation .delta.=tan.sup.-1 (.epsilon./.theta.k), in which .epsilon. is the Kerr ellipticity of the regenerative light and .theta.k is the Kerr rotation angle, does not exceed 10.degree., the thickness of the recording layer being in the range from 8 nm to 13.5 nm and the thickness of the second dielectric layer satisfying the relationship given by the inequality

REFERENCES:
patent: 4792474 (1988-12-01), Murakami et al.
patent: 4917970 (1990-04-01), Funkenbusch
patent: 5055353 (1991-10-01), Yamamato et al.

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