Method to make a stitched writer for a giant magneto-resistive head
AssigneeHeadway Technologies, Inc.
InventorsCherng-Chyi Han, Mao-Min Chen, Po-Kang Wang, Moris Musa Dovek, Gene Michael Sandler, Jen-Wei C. Koo
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Abstract
A giant magneto-resistive head is provided which includes a novel high data-rate stitched pole inductive magnetic write head. The write head incorporates a non-magnetic spacer layer and a magnetic pole yoke that is recessed from the magnetic pole tip. The spacer layer shortens the throat height of the write head, reduces its saturation write current, and improves its overwrite and side erasure performance.
Claims27
A giant magneto-resistive head with a high data rate stitched-pole inductive magnetic write head comprising:
- a giant magneto-resistive read head positioned between a lower and upper magnetic shield, wherein the upper magnetic shield is also the lower magnetic pole of an inductive write head;
- a planarized write gap layer deposited on said upper magnetic shield;
- an upper magnetic pole tip containing a non-magnetic spacer layer formed on said write gap layer;
- an upper magnetic yoke portion stitched to the upper magnetic pole tip with both air-bearing surfaces being co-planar.
A giant magneto-resistive head with a high data rate stitched-pole inductive magnetic write head comprising:
- a giant magneto-resistive read head positioned between a lower and upper magnetic shield, wherein the upper magnetic shield is also the lower magnetic pole of an inductive write head;
- a planarized write gap layer deposited on said upper magnetic shield;
- an upper magnetic pole tip containing a non-magnetic spacer layer formed on said write gap layer;
- an upper magnetic yoke portion stitched to the upper magnetic pole tip with the front surface of the upper pole yoke being recessed relative to the upper pole tip.
Dependencies are inferred from the claim text.