Recording media with multiple exchange coupled magnetic layers
US9028985B2 · kind B2 · utility
1Cited by
261References
26Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 31, 2011 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | Jul 11, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/678
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording (PMR) disk structure is described. The PMR disk structure may include a magnetic capping layer being substantially free of an oxide, an upper magnetic layer with an oxide content disposed directly below and in contact with the magnetic capping layer, and an upper exchange coupling layer disposed below the upper magnetic layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.