Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2007-01-30
2007-01-30
Tupper, Robert S. (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
Reexamination Certificate
active
10932671
ABSTRACT:
A magnetic sensor is disclosed that is disposed between top and bottom magnetic shield layers, the sensor comprising: a nonferromagnetic layer disposed beneath the top shield layer; a magnetically soft layer disposed beneath the nonferromagnetic layer, the magnetically soft layer having a magnetization that rotates in response to an applied magnetic field; a ferromagnetic pinned layer disposed beneath the magnetically soft layer; an antiferromagnetic layer disposed beneath the ferromagnetic layer; and an aluminum-nitride seed layer disposed between the antiferromagnetic layer and the bottom shield layer. The aluminum-nitride seed layer decreases sense current shunting, increases pinning strength, increases magnetoresistance and/or increases yield.
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Park Chang-Man
Zhou Min
Harrison, Esq. Joshua C.
Tupper Robert S.
Western Digital (Fremont) Inc.
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