TbFeCo in PMR media for SNR improvement
US9275669B1 · kind B1 · utility
2Cited by
245References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2015 |
| Grant date | Mar 1, 2016 |
| Priority date | — |
| Expiry date | Mar 31, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/678
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure generally relates to a PMR media for use in a HDD. The PMR media has an amorphous ferri-magnetic material layer disposed within the capping structure. The amorphous ferri-magnetic material layer reduces the noise. The amorphous ferri-magnetic material layer may be disposed between capping layer or on top of the capping layers. Additionally, the amorphous ferri-magnetic material layer may contain Tb.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.