Perpendicular magnetic recording head having reduced shield notching
US8797680B1 · kind B1 · utility
134Cited by
15References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2012 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Oct 26, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49052
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A perpendicular magnetic recording (PMR) transducer is provided. The PRM transducer includes a PMR pole having a top, a bottom, and at least one sidewall, the bottom having a bottom width, the top having a top width bigger than the bottom width. The PRM transducer further includes an intermediate layer adjacent to the at least one sidewall, a write gap on the PMR pole, the write gap including a first layer on the PMR pole, the first layer including a planarization stop layer, and a shield on the write gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.