Recording medium with a varying composition underlayer
US6787251B1 · kind B1 · utility
4Cited by
12References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 5, 2002 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Aug 5, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A bi-crystal magnetic recording medium, i.e., medium with Cr(200) and Co(11.0) orientations, having a CrW-containing underlayer in which the W content increases for improved lattice matching with a Co-alloy magnetic layer has high coercivity, high SMNR and high areal recording density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.