Interlayers for magnetic recording media
US8758912B2 · kind B2 · utility
55Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2011 |
| Grant date | Jun 24, 2014 |
| Priority date | — |
| Expiry date | Apr 19, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/7369
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present invention include a recording medium comprising: a hard magnetic recording layer and an interlayer disposed under the hard magnetic recording layer, wherein the interlayer comprises an upper layer of Ru-based alloy and a lower layer of RuCo or ReCo alloy. Generally for embodiments of the present invention, the lower layer of RuCo or ReCo alloy is formed over a seed layer using a low-pressure sputter process, and the upper layer of Ru-based alloy is formed over the lower layer using a high-pressure sputter process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.