Read sensitivity MR head using permanent magnet longitudinal sta

Details Read sensitivity MR head using permanent magnet longitudinal sta Read sensitivity MR head using permanent magnet longitudinal sta

1995-04-10

1998-04-07

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Head

Hall effect

324252, 338 32R, 33820721, G11B 539

Patent

active

057371555

ABSTRACT:
An MR sensor having a nearly symmetric read sensitivity across the sensor by using permanent magnet boundary control. The sensor's MR element is patterned to eliminate portions of the MR element between the electrical contacts which contribute to undesired read sensitivity. The MR element is maintained in a single domain state using abutting permanent magnets electrically isolated from the MR element.

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