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US 2005/0237666 A1Published application
Magnetic write head with recessed overcoat
AssigneeHitachi Global Storage Technologies Netherlands B.V.
InventorsWen-Chien Hsiao, Wipul Jayasekara, Edward Lee, Vladimir Nikitin, Patrick Webb, Sue Zhang
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Abstract
A magnetoresistive read/write head having a first layer of alumina and a second layer of silicon dioxide overlaying a P3 layer of the head. In a preferred embodiment, the silicon dioxide layer is recessed away from an Air Bearing Surface (ABS) to reduce protrusion of a P2 layer and the P3 layer in the head, and to reduce degradation in the magnetic properties of the pole tips of the P2 and P3 layer ends.
Claims15
A write head comprising:
- a P1 layer;
- a P2 layer overlaying the P1 layer;
- a P3 layer overlaying the P2 layer, a write tip of the P3 layer being oriented towards and recessed from an air bearing surface (ABS);
- a first overcoat overlaying the P3 layer;
- and
- a second overcoat overlaying the first overcoat, the second overcoat being recessed away from the ABS.
3 more elements
A disk drive having a write head, the write head comprising:
- a P1 layer;
- a P2 layer overlaying the P1 layer;
- a P3 layer overlaying the P2 layer, a write tip of the P3 layer being oriented towards and recessed from an air bearing surface (ABS);
- a first overcoat overlaying the P3 layer;
- and
- a second overcoat overlaying the first overcoat, the second overcoat being recessed away from the ABS.
3 more elements
A computer system comprising:
- a disk drive, the disk drive comprising a write head, the write head comprising:
- a P1 layer;
- a P2 layer overlaying the P1 layer;
- a P3 layer overlaying the P2 layer, a write tip of the P3 layer being oriented towards and recessed from an air bearing surface (ABS);
- a first overcoat overlaying the P3 layer;
- and
- a second overcoat overlaying the first overcoat, the second overcoat being recessed away from the ABS.
4 more elements
Dependencies are inferred from the claim text.