Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2006-07-11
2006-07-11
Renner, Craig A. (Department: 2652)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
C360S324200
Reexamination Certificate
active
07075759
ABSTRACT:
A nonmagnetic layer comprising Ru formed on a free magnetic layer, wherein a ferromagnetic layer and a second antiferromagnetic layer are formed on each outer side of the nonmagnetic layer. A ferromagnetic coupling is effectively generated between the ferromagnetic layer and each outer side of the free magnetic layer. Magnetization of the free magnetic layer is adequately controlled by the ferromagnetic coupling without damaging each outer side of the free magnetic layer to allow manufacture of a magnetic sensing element capable of properly defining a narrow track width.
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Hasegawa Naoya
Umetsu Eiji
Alps Electric Co. ,Ltd.
Brinks Hofer Gilson & Lione
Renner Craig A.
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