Method of making a magneto-optical recording medium that include

Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam

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3692754, 3692755, 3692752, 369286, G11B 1304

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active

052532330

ABSTRACT:
A method of making a magneto-optical recording medium for having information magnetically recorded on its recording layer read out by magneto-optical effect by applying a reproducing light beam emitted from a semiconductor laser thereto and detecting the reflected light beam thereof by means of a photodetector having no self-multiplication characteristic or a photodetector having a self-multiplication characteristic. The method includes the steps of selecting a recording layer comprising a magnetic film; selecting a light interference layer comprising a dielectric; defining the thickness of the light interference layer by: ##EQU1## where d is the film thickness of the light interference layer, N is the refractive index of the light interference layer and .lambda. is the wavelength of the reproducing light, Y is selected from 0, 1 and 2, and 1.ltoreq.X.ltoreq.3 or 5.ltoreq.X.ltoreq.7 in the first case or 2.ltoreq.X.ltoreq.3.9 or 4.1.ltoreq.X.ltoreq.6 in the second case, respectively; selecting a light reflecting layer and arranging the recording layer, the light interference layer and the light reflecting layer in succession along one direction to form the magneto-optical recording medium.

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Ishiwata, et al., "Manuscripts Prepared for the National Meeting of the Electrical Society, Apr. 1985", pp. 1 through 7, translation of pp. S.3-9 through S.3-12.

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