Magnetic recording media and method of forming them
US7351445B2 · kind B2 · utility
9Cited by
10References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2006 |
| Grant date | Apr 1, 2008 |
| Priority date | — |
| Expiry date | Jun 12, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/855
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention is directed to carrying out a high density magnetic recording to a material having a large coercive force by perpendicular magnetic recording head.By giving a patterning onto a soft magnetic under layer of a perpendicular two-layer recording media in sync with a period of a recording bit, a magnetic field from a write head can be allowed to converge to a soft magnetic column. Therefore, a magnetization reversal of the magnetic recording media material having a large anisotropic constant becomes possible, and then a high density magnetic recording can be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.