Magnetic transducer head utilizing magnetoresistance effect

Details Magnetic transducer head utilizing magnetoresistance effect Magnetic transducer head utilizing magnetoresistance effect

1984-08-23

1987-07-07

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Hall effect

338 32R, 324252, G11B 5127, G11B 533

Patent

active

046791078

ABSTRACT:
A magnetic head utilizing the magnetoresistance effect comprising a magnetoresistance effect element and a conductor for applying a bias magnetic field to the element by being supplied with a bias current. The conductor is further supplied with a decaying alternating current superimposed on the bias current in advance of the playback operation, so that the hysteresis effect of the magnetic circuit is cancelled and the invariable output characteristics of the magnetic head are obtained.

REFERENCES:
patent: 3864751 (1975-02-01), Bealieu et al.
patent: 3921217 (1975-11-01), Thompson
patent: 4141051 (1979-02-01), Kuijk et al.
patent: 4425593 (1984-01-01), Postma
Feng, "Initializing Single-Domain States in Barberpole Magnetoresistive Sensors", vol. 20, No. 6, Nov. 1977.

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