Dynamic magnetic information storage or retrieval – Head – Hall effect
Patent
1990-08-31
1993-05-04
Levy, Stuart S.
Dynamic magnetic information storage or retrieval
Head
Hall effect
360126, G11B 511, G11B 5127, G11B 5147
Patent
active
052087158
ABSTRACT:
A magnetic shield in a magnetoresistive head. The magnetic shield includes a lip portion adjacent a magnetoresistive element. The magnetic shield has a height equal to an integer multiple of the domain wall periodicity. The lip has a height approximately equal to the periodicity. The total height of the magnetic shield is approximately an integer multiple of the lip portion. The lip portion provides a stabilizing demagnetization effect which returns the magnetic domain pattern to a preferred hard axis magnetic domain pattern following a disruption to the magnetic domain pattern in either the easy or hard axis of the magnetic shield.
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Evans Jefferson
Levy Stuart S.
Seagate Technology Inc.
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