Thermo-magnetic recording materials supporting small stable...

Details Thermo-magnetic recording materials supporting small stable... Thermo-magnetic recording materials supporting small stable...

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H01F 10/12 (2006.01) G03G 5/16 (2006.01) G11B 5/64 (2006.01) H01F 10/13 (2006.01)

Patent

CA 1216941

THERMO-MAGNETIC RECORDING MATERIALS SUPPORTING SMALL STABLE DOMAINS ABSTRACT OF THE DISCLOSURE Amorphous alloys of two materials having antiferromagnetically-coupled magnetization sublat- tices, and capable of deposition as a thin film supporting small stable domains for thermo-magnetic recording. The thin-film material is an alloy of at least one rare-earth element and a transition- metal element. A stable domain of a few microns diameter, allowing highest density of information recording, is achieved by providing the lowest possible wall energy to the domain, with a resulting low anisotropy.

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