CrB and CrMoB as third underlayer to refine grains
US7157161B1 · kind B1 · utility
0Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 2004 |
| Grant date | Jan 2, 2007 |
| Priority date | — |
| Expiry date | May 27, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/656
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The Hr and SNR of a magnetic recording medium are increased and the signal pulse narrowed by employing a tri-layer underlayer structure containing Cr or a Cr alloy wherein the second underlayer contains Cr and B, the first underlayer preferably contains substantially pure Cr, and the third underlayer preferably contains a ternary alloy of Cr.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.