Composite heat assisted magnetic recording media with temperature tuned intergranular exchange
US7678476B2 · kind B2 · utility
25Cited by
33References
16Claims
0Family size
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Key dates
| Filing date | Jan 20, 2006 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Mar 28, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/325
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thin film structure comprises a first layer including a first plurality of grains of magnetic material having a first intergranular exchange coupling, and a second layer positioned adjacent to the first layer and including a second plurality of grains of magnetic material having a second intergranular exchange coupling, wherein the second intergranular exchange coupling is larger than the first intergranular exchange coupling and wherein the Curie temperature of the first layer is greater than the Curie temperature of the second layer. A data storage system including the thin film structure is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.