Thermally assisted magnetic head having main pole arranged between near-field light-generating portions and manufacturing method of same
US8116034B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2008 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Sep 9, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
When first and second near-field light-generating portions are irradiated with laser light or other energy rays, near-field light is generated at the tips of both the near-field light-generating portions. By means of the near-field light thus generated, a magnetic recording medium opposing the medium-opposing surface is heated, and the coercivity of the magnetic recording medium is lowered. Since at least a portion of the main magnetic pole is positioned within the spot region including the region between the first and second near-field light-generating portions, the tips of both the near-field light-generating portions and the main magnetic pole can be brought extremely close together, and high-density recording can be performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.