Magnetic thin film and method of making it

Details Magnetic thin film and method of making it Magnetic thin film and method of making it

1979-11-21

1982-12-07

Silverman, Stanley S.

Coating processes

Magnetic base or coating

Magnetic coating

427128, 4272553, 427350, 118726, 428900, 252 6256, 252 626, G11B 564, G11B 584

Patent

active

043627676

ABSTRACT:
A magnetic thin film is composed of an oxide of Fe.sub.x Co.sub.y Cu.sub.z having spinel structure wherein x, y and z represent respective atomic ratios, x+y+z=1, 0.50.ltoreq.x<0.95, 0.05<y.ltoreq.0.30 and 0.ltoreq.z<0.20. Such film exhibits high coercive force and good squareness.
The film is made by vapor depositing a material containing at least one of Fe.sub.x Co.sub.y Cu.sub.z alloys and oxides thereof onto a substrate held at a temperature between 200.degree. and 500.degree. C. under an oxygen atmosphere with the pressure of above 10.sup.-4 Torr but below 10.sup.-3 Torr.

REFERENCES:
patent: 3859129 (1975-01-01), Chen et al.
patent: 4156037 (1979-05-01), Hattori et al.
patent: 4170689 (1974-10-01), Katsui et al.
patent: 4211803 (1980-07-01), Cowher et al.
patent: 4232061 (1980-11-01), Hattori
patent: 4236946 (1980-12-01), Aboaf

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