Method of the production of a magnetic head

Details Method of the production of a magnetic head Method of the production of a magnetic head

1989-01-09

1990-05-29

Sheehan, John P.

Metal working

Method of mechanical manufacture

Electrical device making

148108, G11B 5127

Patent

active

049283820

ABSTRACT:
In manufacturing a magnetic head having a magnetic circuit formed of magnetic material in which anisotropy can be induced, the magnetic head is processed by a first annealing process in a magnetic field for inducing anisotropy to generate an axis of easy magnetization in one direction in a part of the magnetic material, subsequently the magnetic head is processed by a second annealing process for annealing the magnetic material, applying the magnetic field in one of the directions perpendicular to the axis of the easy magnetization so as to relax the anisotropy induced by the first annealing process.

REFERENCES:
patent: 3039891 (1962-06-01), Mitchell
patent: 4268325 (1981-05-01), O'Handley et al.
patent: 4473415 (1984-09-01), Ochiai et al.
patent: 4475962 (1984-10-01), Hayakawa et al.

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