High permeability amorphous magnetic material

Details High permeability amorphous magnetic material High permeability amorphous magnetic material

1987-01-30

1989-08-22

Sheehan, John P.

Metal treatment

Stock

Magnetic

148403, 428606, H01F 104

Patent

active

048592560

ABSTRACT:
To obtain a high permeability magnetic core, the core is made of a 5 to 25 .mu.m thick ribbon of a Co-based amorphous alloy with a Curie temperature Tc between 120.degree. C. and 270.degree. C., and further heat treated at a temperature below Tc within a magnetic field (1 Oe or more) applied in the lateral direction of the thin ribbon. Further, the saturation magnetostriction constant of the ribbon should be -2 to 1.times.10.sup.-6.

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patent: 4637843 (1987-01-01), Takayama et al.
Tech. Mitt. Krupp Forsh.-Ber-Band 40 (1982) H., pp. 67-71, by W. Jaschinski.
J. Appl. Phys. 51(8), Aug. 1980, by Kohmoto et al., pp. 4342-4345.

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