Substantially isotropic magnetic recording medium comprising a seedlayer
US6146754A · kind A · utility
9Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1998 |
| Grant date | Nov 14, 2000 |
| Priority date | — |
| Expiry date | Sep 2, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A high areal density magnetic recording medium exhibiting high Hc, high SNR, high S* and substantially isotropic magnetic properties is achieved by depositing a thin seedlayer before depositing the underlayer. Embodiments include heating the seedlayer under vacuum in the presence of residual oxygen to induce appropriate crystalline orientation and surface morphology for nucleation and growth of the underlayer and magnetic layer having substantially isotropic magnetic properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.