Magnetoresistive device

Details Magnetoresistive device Magnetoresistive device

1987-06-24

1988-09-06

Sheehan, John P.

Metal treatment

Stock

Magnetic

148312, 420 94, 420459, 365158, H01F 104

Patent

active

047690933

ABSTRACT:
A magnetoresistive device includes a magnetoresistive film made of permalloy alloy. This thin film is formed on a substrate by sputtering or vapor deposition method. Thereafter, the thin film is heated to a temperature between 200.degree. C. and 350.degree. C. by flowing an electric current therethrough or irradiating the thin film with an electron or laser beam. It is desirable that the heat treatment is effected in an alternating magnetic field. The permalloy alloy may contain at least one element including Rh, Ru, Mo, Cr and V.

REFERENCES:
patent: 3117896 (1964-01-01), Chu et al.
patent: 3582408 (1971-06-01), Onyshkevych
patent: 3723106 (1973-03-01), Schlenker et al.
patent: 3846185 (1974-11-01), Nakajima et al.
patent: 4440720 (1984-04-01), Masumoto et al.
patent: 4572750 (1986-02-01), Masumoto et al.
Ahm et al., "Magnetic Thin-Film Alloy with Improved Thermal Stability", IBM Technical Disclosure Bulletin, vol. 8, No. 10, Mar. 1966.

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