System for providing a perpendicular magnetic recording transducer using a split seed layer
US8780498B1 · kind B1 · utility
136Cited by
14References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 30, 2012 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Nov 30, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49052
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording transducer comprises a main pole having a bottom, a top wider than the bottom, and a top bevel. The transducer further comprises a nonmagnetic gap covering the main pole, a portion of the nonmagnetic gap residing on the top of the main pole, a first seed layer, at least a portion of the first seed layer covering the portion of the nonmagnetic gap on top of the main pole, a second seed layer residing on the first seed layer, and a wrap-around shield on the second seed layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.