Magnetic recording medium with a MgO sputter deposited seed layer
US5800931A · kind A · utility
43Cited by
18References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1995 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Nov 6, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a longitudinal magnetic recording media having a substrate, a sputter deposited MgO seed layer, a Co or Co alloy based magnetic layer and an underlayer disposed between the seed layer and the magnetic layer comprised of Cr, a Cr alloy or a material having a B2 ordered crystalline structure, preferably NiAl or FeAl. A thin Cr or Cr alloy intermediate layer of about 1.0 nm to 5.0 nm thick may be positioned between the underlayer and the magnetic layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.