Dynamic magnetic information storage or retrieval – Head – Hall effect
Patent
1997-03-12
1998-10-27
Evans, Jefferson
Dynamic magnetic information storage or retrieval
Head
Hall effect
G11B 539
Patent
active
058285270
ABSTRACT:
A thin-film magnetic head improves magnetic stability of a magnetoresistance effect film 13 for further stabilizing the playback output. The thin-film magnetic head has a magnetoresistance effect stabilizing layer 11, a non-magnetic layer 12 and a magnetoresistance effect layer 13 exhibiting the magnetoresistance effect. The magnetoresistance effect stabilizing layer 11 has a hard magnetic film and a soft magnetic film. The magnetoresistance effect stabilizing layer 11 has a non-magnetic film 11c of a non-magnetic material in at least a partial area between a hard magnetic film 11b and a soft magnetic film 11d. In the thin-film magnetic head, there is produced a stable magnetostatic coupling action between the magnetoresistance effect stabilizing layer 11 and the magnetoresistance effect layer 13 for increasing the magnetic stability of the magnetoresistance effect layer 13 operating as a magnetically sensitive portion.
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Abe Moriaki
Honda Tadayuki
Shibata Takuji
Takada Akio
Evans Jefferson
Sony Corporation
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