Thermally-assisted magnetic recording head including a shield
US8493821B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 18, 2012 |
| Grant date | Jul 23, 2013 |
| Priority date | — |
| Expiry date | Sep 18, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thermally-assisted magnetic recording head includes: a main pole having an end face located in a medium facing surface; a waveguide; a plasmon generator having a near-field light generating part located in the medium facing surface; and a shield located on the rear side in the direction of travel of a recording medium with respect to the main pole. The shield has an end face located in the medium facing surface and lying on the rear side in the direction of travel of the recording medium with respect to the end face of the main pole. The end face of the main pole and the end face of the shield are at a distance of 50 to 300 nm from each other. The near-field light generating part is located between the end face of the main pole and the end face of the shield in the medium facing surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.