Perpendicular magnetic write head having a hull shaped stitched pole
US8837084B2 · kind B2 · utility
0Cited by
9References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 29, 2012 |
| Grant date | Sep 16, 2014 |
| Priority date | — |
| Expiry date | Jan 8, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3116
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.