Perpendicular magnetic recording medium and magnetic storage...

Details Perpendicular magnetic recording medium and magnetic storage... Perpendicular magnetic recording medium and magnetic storage...

2006-11-21

2009-10-20

Rickman, Holly (Department: 1794)

Stock material or miscellaneous articles

Magnetic recording component or stock

Thin film media

Reexamination Certificate

active

07604879

ABSTRACT:
A perpendicular magnetic recording medium is provided with a substrate, a soft magnetic back layer provided on a surface of the substrate, an orientation controlling underlayer provided on the soft magnetic back layer, and a recording layer provided above the orientation controlling underlayer and having axes of easy magnetization approximately perpendicular to the surface of the substrate. The recording layer is made of a ferromagnetic material having an hcp crystal structure. The orientation controlling underlayer is made of a nonmagnetic material having an fcc crystal structure and having NiCr or NiCu as a main component.

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MAchine translation ofJP 2005-327361, Watanabe et al., Nov. 2005.

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