Perpendicular magnetic recording head with nonmagnetic metal layer even with top face of pole layer
US7843665B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 11, 2006 |
| Grant date | Nov 30, 2010 |
| Priority date | — |
| Expiry date | May 4, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49046
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic head including an encasing layer having a groove; a nonmagnetic metal layer that has a sidewall located directly above the edge of the groove and that is disposed on a region of the encasing layer away from the medium facing surface; two side shield layers that have sidewalls located directly above the edge of the groove and that are disposed adjacent to the nonmagnetic metal layer on regions of the encasing layer closer to the medium facing surface than the nonmagnetic metal layer; and a pole layer. The pole layer is placed in an encasing section formed of the groove of the encasing layer, the sidewall of the nonmagnetic metal layer, and the sidewalls of the two side shield layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.