Magneto-optical recording medium

Details Magneto-optical recording medium Magneto-optical recording medium

1990-05-15

1991-10-08

Cashion, Jr., Merrell C.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428457, 428472, 428694, 428698, 428900, 428928, G11B 724

Patent

active

050553534

ABSTRACT:
A magneto-optical recording medium comprises a substrate and a magneto-optical recording film overlaid on the substrate. The magneto-optical recording film is composed of a first protective dielectric layer, a recording layer, a second protective dielectric layer, and a reflection metal layer, which layers are overlaid in this order on the substrate. The thickness of the first protective dielectric layer falls within the range of 950 .ANG. to 1,300 .ANG.. The thickness of the recording layer falls within the range of 200 .ANG. to 400 .ANG.. The thickness of the second protective dielectric layer falls within the range of 100 .ANG. to 600 .ANG.. The thickness of the reflection metal layer falls within the range of 200 .ANG. to 800 .ANG..

REFERENCES:
patent: 4466035 (1984-08-01), Connell et al.
patent: 4693943 (1987-09-01), Kishi et al.
patent: 4717628 (1988-01-01), Takahashi et al.
patent: 4725502 (1988-02-01), Kiyomiya et al.
patent: 4786559 (1988-11-01), Murakami et al.
patent: 4801499 (1989-01-01), Aoyama et al.
Ohta, K. et al., "Study on High Reliability of a Magnetooptic Medium with a Multilayer-Structure", J. Appl. Elect., vol. 8, No. 2 (1984), pp. 93-96.
Keay, D. et al., "Longitudinal Kerr Magnetooptic Effect in Multilayer Structures of Dielectric and Magnetic Films," Optica Acta, vol. 15, No. 4 (1968), pp. 373-378.

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