Dynamic magnetic information storage or retrieval – Head – Hall effect
Patent
1996-04-03
1999-02-16
Davis, David D.
Dynamic magnetic information storage or retrieval
Head
Hall effect
G11B 539
Patent
active
058726896
ABSTRACT:
A high-sensitivity orthogonal magnetoresistive (MR) read head is provided which employs a single MR stripe. The MR stripe extends perpendicular to an air bearing surface (ABS) of the read head and has an easy axis which extends parallel to the ABS. Longitudinal biasing layers are magnetostatically-coupled to the MR stripe for biasing the MR stripe parallel to the ABS. The longitudinal biasing layers and the MR stripe are connected so that their film surfaces lie within a common plane. First and second leads are connected to the MR stripe in a spaced-apart relationship for conducting a sense current through the MR stripe perpendicular to the ABS. The first lead is connected to the MR stripe and the longitudinal biasing layers at the ABS in a substantially planar configuration. A transverse biasing conductor is coupled to the MR stripe for biasing the MR stripe. In the preferred embodiment, the longitudinal biasing layers are constructed of amorphous CoSm. The positioning of the MR stripe and the transverse biasing conductor with respect to first and second shield layers of the MR read head can implement enhanced longitudinal and/or transverse biasing.
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Davis David D.
International Business Machines - Corporation
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