PMR writer with graded side shield
US8611046B2 · kind B2 · utility
20Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2010 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Jan 16, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3163
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A perpendicular magnetic recording (PMR) head is fabricated with a pole tip shielded laterally by a graded side shield that is conformal to the shape of the pole tip at an upper portion of the shield but not conformal to the pole tip at a lower portion. The shield includes a trailing shield, that is conformal to the trailing edge of the pole tip and may include a leading edge shield that magnetically connects two bottom ends of the graded side shield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.