Magnetoresistant transducer

Details Magnetoresistant transducer Magnetoresistant transducer

1981-10-26

1984-05-08

Kilgore, Robert Martin

Dynamic magnetic information storage or retrieval

Head

Hall effect

360 77, 360122, 324210, G11B 512, G11B 530, G11B 2110, G01R 3312

Patent

active

044478399

ABSTRACT:
A magnetoresistant transducer for reading data present on the tracks of a multitrack magnetic carrier, comprises at least one magnetoresistant element perpendicular to the direction of travel of the data, and first and second magnetic screening means situated at either side of the element.
The magnetoresistant transducer comprises deflecting means for deflecting the magnetic field generated by the current flowing through the element. The deflecting means are situated between the latter and the first and second screening means to intercept and deflect the magnetic field lines transmitted by the data items on the track. The deflecting means includes a plurality of mutually parallel thin magnetic blades separated from each other by thin non-magnetic laminations the thickness of which is such that the magnetic coupling between two adjacent laminations is weak. The laminations and magnetoresistances are of anisotropic material and have their axes of easy and difficult magnetization parallel to each other.

REFERENCES:
patent: 3222754 (1965-12-01), Homan
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patent: 4071868 (1978-01-01), Kaminaka
patent: 4179720 (1979-12-01), Miura
patent: 4195323 (1980-03-01), Lee
Shew-"Increased Density Magnetic Recording", IBM Tech. Disc. Bull., vol. 2, No. 2, p. 35, Aug. 1959.
Brede and LaPine-"Shielding Method", IBM Tech. Disc. Bull., vol. 12, No. 7, p. 958, Dec. 1969.
Patent Abstracts of Japan-Toki-"Magnetic Head", vol. 3, No. 18.

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