Composite substrate for a thin-film magnetic head

Details Composite substrate for a thin-film magnetic head Composite substrate for a thin-film magnetic head

1983-03-02

1986-08-26

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

204192M, 360110, 360120, 360122, 360125, 360126, 360127, 427128, 427129, 427131, 427132, 427355, 428426, 428446, 428450, 428694, 428699, 428701, 428900, 428472, G11B 712

Patent

active

046082930

ABSTRACT:
A composite substrate for a thin-film magnetic head comprises a substrate material, and an insulating oxide film formed thereon, and defining a smooth and stress-free surface having a surface roughness not greater than 50 .ANG.. A film of a magnetic material having improved magnetic properties may be formed on the surface of the oxide film.

REFERENCES:
patent: 3470020 (1969-09-01), Boudreaux
patent: 3681225 (1972-08-01), Genma
patent: 3683126 (1972-08-01), Krause
patent: 4170788 (1979-10-01), Hashimoto
patent: 4246620 (1981-01-01), Kaminaka
patent: 4254189 (1981-03-01), Fisher
patent: 4411960 (1983-10-01), Mizuhara
patent: 4422117 (1983-12-01), Nomura

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