Perpendicular magnetic recording head having a reduced field under the return pole and minimal eddy current losses
US7099121B2 · kind B2 · utility
16Cited by
11References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 2003 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Mar 17, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3967
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A perpendicular magnetic recording head comprises a write pole having a pole tip adjacent to an air bearing surface, a return pole, a pedestal for magnetically coupling the write pole to the return pole, a coil for inducing magnetic flux in the write pole, and a shield for coupling magnetic flux from the coil to the return pole. Disc drives that include such recording heads are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.