Magnetic recording media, substrate for magnetic recording media, and magnetic recording apparatus
US7580223B2 · kind B2 · utility
2Cited by
5References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 28, 2006 |
| Grant date | Aug 25, 2009 |
| Priority date | — |
| Expiry date | Mar 9, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/73921
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
According to one embodiment, a magnetic recording media includes a substrate having recording tracks and separating regions separating the recording tracks, the separating regions having patterns of protrusions and recesses formed therein, and a recording film deposited on the substrate, in which a difference in height between a top of the recording track and a top of the separating region is 2 nm or more and 7 nm or less, and a difference in height between the top of the recording track and a bottom of the separating region is 10 nm or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.