Magnetoresistive effect composite head with laminated magnetic l

Details Magnetoresistive effect composite head with laminated magnetic l Magnetoresistive effect composite head with laminated magnetic l

1997-11-17

1999-06-08

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Head

Hall effect

360126, G11B 5147, G11B 539

Patent

active

059108703

ABSTRACT:
A multi-layer structure includes a magnetic pole layer, a magnetic isolation layer extending over the magnetic pole layer, and a magnetic layer extending over the magnetic isolation layer so that the magnetic layer is isolated by the magnetic isolation layer from the magnetic pole layer, the magnetic layer having a unidirectional magnetization in parallel to an interface between the magnetic isolation layer and the magnetic layer, the magnetic isolation layer being capable of suppressing a generation of exchange coupling between the magnetic layer and the magnetic pole layer, so that a magnetization of the magnetic pole layer is biased and stabilized in a direction antiparallel to a direction of magnetization of magnetic layer by static magnetic coupling of the magnetization of the magnetic layer.

REFERENCES:
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patent: 5739991 (1998-04-01), Matono et al.
patent: 5750275 (1998-05-01), Katz et al.
patent: 5768073 (1998-06-01), Nepela et al.
patent: 5792547 (1998-08-01), Liu et al.
patent: 5822159 (1998-10-01), Fukuyama et al.
M. Yoshida, et al., "Edge Eliminated Head", pp. 3837-3839, IEEE Transactions on Magnetics, vol. 29, No. 6, Nov. 1993.

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