Dynamic magnetic information storage or retrieval – Head – Hall effect
Patent
1996-06-04
1998-05-05
Heinz, A. J.
Dynamic magnetic information storage or retrieval
Head
Hall effect
G11B 530
Patent
active
057484139
ABSTRACT:
A magnetoresistive (MR) read transducer includes an MR sensor element having end regions and a center active region. The end regions are pinned both top and bottom by an exchange coupling antiferromagnetic material. This pinning action causes the end regions to act as permanent magnets having the same remanent magnetic moment M.sub.r as that of the center active region, thereby resulting in suppression of magnetic edge effects in the transducer. A magnetic soft bias layer adjacent to the magnetoresistive sensor element also has its ends pinned by exchange coupling antiferromagnetic material.
REFERENCES:
patent: 5285339 (1994-02-01), Chen et al.
Lederman Marcos M.
Yuan Samuel W.
Heinz A. J.
Kallman Nathan N.
Read-Rite Corporation
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