Perpendicular magnetic recording head including nonmagnetic layer overlaying main pole layer
US6903900B2 · kind B2 · utility
27Cited by
14References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2001 |
| Grant date | Jun 7, 2005 |
| Priority date | — |
| Expiry date | Nov 25, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3163
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A perpendicular magnetic recording head includes: an auxiliary pole layer; a main pole layer; a coil layer for providing a recording magnetic field to the auxiliary pole layer and the main pole layer; a nonmagnetic layer; and a connection layer magnetically coupled to the main pole layer. The nonmagnetic layer is formed on the main pole layer to maintain the main pole layer at a predetermined height during manufacture, allowing independent control of the track width Tw and the height of the main pole layer. A method for manufacturing the perpendicular magnetic recording head is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.