Method of controlling magnetic characteristics of spin-valve mag

Details Method of controlling magnetic characteristics of spin-valve mag Method of controlling magnetic characteristics of spin-valve mag

1998-02-23

2000-09-26

Sheehan, John

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148121, 148103, H01F 1032

Patent

active

061237817

ABSTRACT:
A method of controlling magnetic characteristics of a spin valve effect MR element and a method of controlling magnetic characteristics of a magnetic head with the MR element include a step of supplying direct current with a gradually increasing value to the MR element so as to generate magnetic field in a desired direction and to generate joule heat, the generated magnetic field and the generated joule heat being applied to the MR element, and a step of controlling a magnetization direction caused by exchange coupling in the MR element based upon the applied magnetic field and the applied joule heat.

REFERENCES:
patent: 5206590 (1993-04-01), Dieny et al.
patent: 5422571 (1995-06-01), Gurney et al.
patent: 5650887 (1997-07-01), Dovek et al.

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