Intermediate tri-layer structure for perpendicular recording media
US7833640B2 · kind B2 · utility
7Cited by
5References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2005 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Jul 11, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/658
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved structure for the construction of perpendicular recording media is disclosed. The structure includes a tri-layer IML resident between a soft under layer CoTaZr film and a CoPtCr—SiO2 magnetic media. In an embodiment, the tri-layer comprises a RuxCr1−x layer over dual nucleation layers of Ni—Fe and Ni—Fe—Cr. The tri-layer replaces the typical Ru and Ni—Fe intermediate layers of the prior art, resulting in considerable improvement in lattice matching between the Ru containing intermediate layer and the CoPtCr—SiO2 magnetic media, further resulting in improved magnetic media performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.