Platinum or palladium/cobalt multilayer on a zinc oxide or indiu

Details Platinum or palladium/cobalt multilayer on a zinc oxide or indiu Platinum or palladium/cobalt multilayer on a zinc oxide or indiu

1990-12-27

1992-01-21

Cashion, Jr., Merrell C.

Stock material or miscellaneous articles

Composite

Of inorganic material

428900, 369 13, 369 14, G11B 566

Patent

active

050827499

ABSTRACT:
This invention provides a magneto-optical recording medium comprised of a substrate, a base layer of zinc oxide or indium oxide sputtered onto the substrate and a multilayer recording film sputtered onto the base layer of zinc oxide or indium oxide, wherein the base layer or zinc oxide or indium oxide is from about 200 A to about 4500 A (about 20 nm to about 450 nm) thick, preferably from about 200 A to about 2000 A (about 20 nm to about 200 nm) thick, the multilayer recording film is a platinum/cobalt or a palladium/cobalt multilayer film consisting of alternating layers of platinum and cobalt or palladium and cobalt, and the substrate is transparent to the radiation used to record and read.

REFERENCES:
patent: 4587176 (1986-05-01), Carcia
patent: 4670323 (1987-06-01), Nakamura et al.
patent: 4678721 (1987-07-01), de Broeder et al.
patent: 4690861 (1987-09-01), Nakamura et al.
patent: 4788095 (1988-11-01), Machida et al.

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