System and method for determining intergranular exchange in perpendicular recording media
US7203607B2 · kind B2 · utility
1Cited by
4References
17Claims
0Family size
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Key dates
| Filing date | Nov 12, 2004 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Jul 29, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0029
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for estimating the average intergranular exchange field using measurements of major and minor hysteresis loops. The method also facilitates deshearing hysteresis loops for analysis purposes in perpendicular media. This estimation technique is especially important for modern perpendicular media because exchange plays a critical role and process control can be difficult.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.