Near field light assisted magnetic recording head and recording apparatus using the same
US8054714B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2007 |
| Grant date | Nov 8, 2011 |
| Priority date | — |
| Expiry date | May 29, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A head using near field light is formed, which is characterized by including a near field light assisted magnetic recording head characterized by including a pyramid tip 43 configured to generate near field light at the tip end thereof, in which magnetic recording is conducted by assistance of the near field light, a magnetic recording element 13 is formed of a first magnetic pole 16a and a second magnetic pole 16b, the first magnetic pole is formed of a first thin film on a first side surface of the tip, the second magnetic pole is formed of a second thin film on a second side surface facing to the first side surface of the tip, and the first thin film and the second thin film have different film thicknesses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.