Amorphous magnetic thin film and plane magnetic element using sa

Details Amorphous magnetic thin film and plane magnetic element using sa Amorphous magnetic thin film and plane magnetic element using sa

1994-06-28

1996-06-04

Sheehan, John

Metal treatment

Stock

Magnetic

148306, 148313, 148315, 420121, H01F 1153

Patent

active

055229468

ABSTRACT:
An amorphous magnetic thin film possesses as at least part of a thin film forming area a microstructure composed of a first amorphous phase containing at least either of iron and cobalt and bearing magnetism and a second amorphous phase disposed round the first amorphous phase and containing boron and at least one element selected from among the elements of the 4B Group in the Periodic Table of Elements and exhibits uniaxial magnetic anisotropy in the plane of film. The amorphous magnetic thin film possesses soft magnetism concurrently satisfying high saturation magnetization and high resistivity and, at the same time, easily acquires high frequency permeability by applying magnetic field in the hard axis of magnetization. Use of these amorphous magnetic thin films for plane magnetic elements permits the plane magnetic elements to be miniaturized and to be endowed with exalted performance. The amorphous magnetic thin film possesses a composition substantially represented by the formula:

REFERENCES:
patent: 4921763 (1990-05-01), Karamon
"A New Type of High-Resistive Soft Magnetic Amorphous Films Utilized For A Very High-Frequency Range," H. Karamon, Journal Of Applied Physics, vol. 63, pp. 4306, 1988 (Apr. 15, 1988).

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