Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2005-07-05
2005-07-05
Miller, Brian E. (Department: 2652)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
C324S252000
Reexamination Certificate
active
06914759
ABSTRACT:
The present invention is directed to a spin valve sensor for use in a data storage system, that is adapted to receive a sense current and produce a GMR effect in response to applied magnetic fields. The spin valve sensor includes first and second ferromagnetic free layers, a spacer layer positioned between the first and second ferromagnetic free layers, and a biasing component. The first ferromagnetic free layer has a magnetization (M1) in a first direction, when in a quiescent (non-biased) state. The second ferromagnetic free layer has a magnetization (M2) in a second direction that is anti-parallel to the first direction, when in a quiescent (non biased) state.
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Chen Lujun
Fernandez-de-Castro Juan J.
Giusti James H.
Miller Brian E.
Seagate Technology LLC
Westman Champlin & Kelly
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