Anti-ferromagnetically coupled recording media with enhanced RKKY coupling
US6964819B1 · kind B1 · utility
31Cited by
3References
16Claims
0Family size
Assignee
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Key dates
| Filing date | May 6, 2003 |
| Grant date | Nov 15, 2005 |
| Priority date | — |
| Expiry date | May 6, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/7379
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An anti-ferromagnetically coupled (“AFC”) magnetic recording medium with RKKY coupling between spaced-apart magnetic layers comprising a non-magnetic substrate having a surface, and a layer stack atop the substrate surface. The layer stack comprises, in overlying sequence from the substrate surface: a magnetic stabilization layer, a non-magnetic spacer layer, and a main magnetic recording layer the main magnetic recording layer comprises, in overlying sequence from the non-magnetic spacer layer: (i) a top interface layer, (ii) a Cr alloy magnetic layer, and (iii) a top magnetic layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.