Anti-ferromagnetically coupled soft underlayer
US7666529B2 · kind B2 · utility
3Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2005 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Dec 28, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/667
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium having a first magnetic layer, a spacer layer, and a second magnetic layer, in this order, wherein the spacer layer includes a non-magnetic layer and a thickness of the spacer layer is selected to establish anti-ferromagnetic coupling between the first magnetic layer and the second magnetic layer, and a thickness of both the first and second magnetic layers are less than a critical thickness for formation of stripe domains in the magnetic layers is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.