Magnetoresistive read transducer having hard magnetic shunt bias

Details Magnetoresistive read transducer having hard magnetic shunt bias Magnetoresistive read transducer having hard magnetic shunt bias

1988-12-21

1991-04-02

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Head

Hall effect

G11B 5127

Patent

active

050050966

ABSTRACT:
A magnetoresistive (MR) read transducer comprising an MR layer having passive end regions separated by a central active region. A longitudinal bias is produced by a thin film of hard magnetic material in the end regions only, and the thin film of hard magnetic material is spaced from the MR layer by a nonmagnetic spacer layer so that a magnetostatic longitudinal bias is produced of a level to maintain the passive end regions of the MR layer in a stable state.

REFERENCES:
patent: 3840898 (1974-10-01), Bajorek et al.
patent: 4639806 (1987-01-01), Kira et al.
patent: 4663585 (1987-05-01), Tsang
patent: 4785366 (1988-11-01), Krounbi et al.
patent: 4879619 (1989-11-01), Fontana et al.

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