Heat assisted magnetic recording medium and method for...

Stock material or miscellaneous articles – Magnetic recording component or stock – Thin film media

Reexamination Certificate

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Reexamination Certificate

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07838135

ABSTRACT:
A novel heat assisted magnetic recording (HAMR) medium and the fabrication method therefor are provided. The exchange coupling effect occurring at the interface of FePt/CoTb double layers is adopted, and thus the resulting magnetic flux would be sufficient enough to be detected and readout under the room temperature. The provided HAMR medium exhibits a relatively high saturation magnetization and perpendicular coercivity, and thus possesses a great potential for the ultra-high density recording application.

REFERENCES:
patent: 6881495 (2005-04-01), Kikitsu et al.
patent: 2003/0064249 (2003-04-01), Uwazumi et al.
patent: 2005/0041335 (2005-02-01), Kikitsu et al.
patent: 2006/0188743 (2006-08-01), Seki et al.
patent: 2006/0222904 (2006-10-01), Hsia et al.
patent: 2007/0026263 (2007-02-01), Kubota et al.
patent: 2002203306 (2002-07-01), None
patent: 2004086427 (2004-10-01), None
Fang et al., “Magnetic properties of CoTb/FePt(001) nano-bilayer films”, Nanotechnology, vol. 17, 2006, pp. 2411-2414.

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