Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2006-12-26
2006-12-26
Chen, Tianjie (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
Reexamination Certificate
active
07154717
ABSTRACT:
The magnetoresistance effect film is capable of performing enough function without employing an antiferromagnetic layer. The film comprises: a seed layer; a first pinned magnetic layer formed on the seed layer; an antiferromagnetically coupling layer formed on the first pinned magnetic layer; a second pinned magnetic layer formed on the antiferromagnetically coupling layer; a nonmagnetic layer formed on the second pinned magnetic layer; a free magnetic layer formed on the nonmagnetic layer; and a protection layer formed on the free magnetic layer. The seed layer fixes magnetizing directions of the first and the second pinned magnetic layer. The seed layer is made of a material which does not exchange-couple with the first pinned magnetic layer.
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Chen Tianjie
Greer Burns & Crain Ltd.
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