Magnetoresistive head

Details Magnetoresistive head Magnetoresistive head

1997-10-15

1999-02-09

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Head

Hall effect

G11B 539

Patent

active

058702610

ABSTRACT:
A magnetoresistive head includes a magnetoresistive element and a for-bias soft magnetic film attached to the magnetoresistive element via a spacer. The for-bias soft magnetic film has an axis of easy magnetization which is set to be non-perpendicular to a direction of a bias magnetic field applied to the for-bias soft magnetic film. The bias magnetic field is generated by a sense current flowing in the magnetoresistive element. With this structure, the for-bias soft magnetic film can be easily magnetically saturated so that a reliable characteristic of the magnetoresistive head is ensured. The axis of easy magnetization of the for-bias soft magnetic film may be inclined to the direction of the bias magnetic field by an angle of equal to or less than 60 degrees. Alternatively, the axis of easy magnetization of the for-bias soft magnetic film may be inclined to the direction of the bias magnetic field by an angle of equal to or less than 15 degrees. Alternatively, the axis of easy magnetization of the for-bias soft magnetic film may be set parallel to the direction of the bias magnetic field.

REFERENCES:
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patent: 4803580 (1989-02-01), Mowry
patent: 4816948 (1989-03-01), Kamo et al.
patent: 4833560 (1989-05-01), Doyle
patent: 4907114 (1990-03-01), Shiiki et al.
patent: 5001586 (1991-03-01), Aboaf et al.
patent: 5198795 (1993-03-01), Shibasaki et al.
patent: 5287237 (1994-02-01), Kitada et al.

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