Energy assisted magnetic recording medium capable of suppressing high DC readback noise
US9001630B1 · kind B1 · utility
2Cited by
254References
2Claims
0Family size
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Key dates
| Filing date | Apr 24, 2014 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Apr 24, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A perpendicular magnetic recording (PMR) disk used in energy assisted magnetic recording drives is described. The PMR disk includes a substrate, a magnetic recording layer disposed above the substrate, an exchange coupling layer disposed above the magnetic recording layer, and a capping layer disposed above the exchange coupling layer. The capping layer has a Curie temperature greater than the Curie temperature of the magnetic recording layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.