Magnetoresistive effect head

Details Magnetoresistive effect head Magnetoresistive effect head

1999-06-15

2000-10-31

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

G11B 539

Patent

active

061411906

ABSTRACT:
A magnetoresistive effect head which can produce a high reproduced output independently from a strength of a magnetic domain control layer even when an electrode spacing is small, and a magnetic recording and reproducing apparatus using the same are provided. A magnetoresistive effect film is formed by a stacked layer of a first ferromagnetic film, a non-magnetic conductive film and a second ferromagnetic film. The second ferromagnetic film is stacked on an antiferromagnetic film, and magnetic domain control layers are arranged on the widthwise opposite sides of the magnetoresistive effect film. A pair of electrodes are arranged on each magnetic domain control layers with the electrode spacing being smaller than the width of the magnetoresistive effect film so that a current flows only in a central area of the magnetoresistive effect film.

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U.S. Pat. application Ser. No. 08/45,189 filed on Apr. 13, 1993.
N. Miyamoto et al., "Track Profile Characteristics of MR Heads with an NiO Domain Control Layer", Journal of the Magnetics Society of Japan, vol. 19, No. 2, Apr. 1,1995, pp. 105-108 (in Japanese).
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Patent Abstracts of Japan, vol. 96, No. 4, Apr. 30, 1996, for Japanese Kokai 7-320235 published on Dec. 8, 1995.

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