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US 8,837,084 B2Granted
Perpendicular magnetic write head having a hull shaped stitched pole
AssigneeHGST Netherlands B.V.
InventorsWen-Chien D. Hsiao, Aron Pentek, Katalin Pentek, Junsheng Yang
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Abstract
A magnetic write head having a stitched magnetic pole (also referred to as a shaping layer) for conducting magnetic flux to the pole tip portion of a magnetic write pole. The stitched magnetic pole has a shape so as to be thicker in a central region that is aligned with the pole tip of the write pole and is thinner a its outer sides. This shape helps to channel magnetic flux to the pole tip portion of the write pole while maintaining sufficient pole surface area for high data rate recording.
Claims20
A magnetic write head, comprising:
- a magnetic write pole having pole tip that extends to an air bearing surface;
- and
- a magnetic pole formed adjacent to the magnetic write pole and having front end that is recessed from the air bearing surface, the magnetic pole having a center portion and laterally opposed outer portions, the center portion being thicker than the laterally opposed outer portions;
- wherein the magnetic pole has a first surface in contact with the magnetic write pole and a second surface that is opposite the first surface, and wherein the first surface is substantially flat and the second surface is curved to form the thicker center portion and thinner laterally opposed outer portions.
1 more element
A magnetic data recording system, comprising:
- a housing;
- a magnetic media, mounted within the housing;
- an actuator;
- a slider connected with the actuator for movement adjacent to a surface of the magnetic media;
- and
- a magnetic write head connected with the slider, the magnetic write head comprising:
- a magnetic write pole having pole tip that extends to an air bearing surface;
- and
- a magnetic pole formed adjacent to the magnetic write pole and having front end that is recessed from the air bearing surface, the magnetic pole having a center portion and laterally opposed outer portions, the center portion being thicker than the laterally opposed outer portions;
- wherein the magnetic pole has a first surface in contact with the magnetic write pole and a second surface that is opposite the first surface, and wherein the first surface is substantially flat and the second surface is curved to form the thicker center portion and thinner laterally opposed outer portions.
7 more elements
Dependencies are inferred from the claim text.