Magnetoresistive head with deposited biasing magnet

Details Magnetoresistive head with deposited biasing magnet Magnetoresistive head with deposited biasing magnet

1993-12-03

1995-06-27

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Head

Hall effect

G11B 539

Patent

active

054284910

ABSTRACT:
A thin film deposited magnetoresistive head includes a thin film permanent magnet having a rectangular body longer than the magnetoresistive element in the head and arranged coplanar and parallel with the magnetoresistive element. The permanent magnet has a set of tabs that extend in the width direction and the magnetoresistive element is located between the tabs. The magnetoresistive element is effectively biased by the permanent magnet, but the magnet is located at a distance from the head medium interface and is therefore not exposed to environmental corrosion and does not distort the information recorded on the medium.

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Smith et al, Dual Magnetoresistive Head for Very High Density Recording, Sep. 1992, IEEE Transactions On Magnetics, vol. 28, No. 5, pp. 2292-2294.
Bajorek et al, Permanent Magnet Films For Biasing Of Magnetoresistive Transducers, Sep. 1975, IEEE Transactions On Magnetics, vol. Mag-11, No. 5, pp. 1209-1211.

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