Method for preparing FePt media at low ordering temperature and fabrication of exchange coupled composite media and gradient anisotropy media for magnetic recording
US8133332B2 · kind B2 · utility
2Cited by
1References
19Claims
0Family size
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Key dates
| Filing date | Feb 12, 2009 |
| Grant date | Mar 13, 2012 |
| Priority date | — |
| Expiry date | Apr 17, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D1/26
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method includes: constructing a multilayer structure including a first layer of Pt, a first layer of A1 phase FePt on the first layer of Pt, and a second layer of Pt on the layer of FePt, and annealing the multilayer structure to convert the A1 phase FePt to L1o phase FePt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.