Magnetic recording medium, method of manufacturing the same,...

Details Magnetic recording medium, method of manufacturing the same,... Magnetic recording medium, method of manufacturing the same,...

2009-08-17

2011-10-11

Rickman, Holly (Department: 1785)

Stock material or miscellaneous articles

Magnetic recording component or stock

Thin film media

Reexamination Certificate

active

08034472

ABSTRACT:
The present invention provides a magnetic recording medium which is capable of improving the perpendicular orientation of a perpendicular magnetic recording layer while maintaining a writing performance during recording and obtaining both an improvement in the perpendicular orientation and fine magnetic crystal particles with a uniform diameter, and which enables information to be recorded or reproduced at high density, a method of manufacturing the same, and a magnetic recording/reproducing apparatus. A magnetic recording medium10according to the present invention includes at least a soft magnetic underlayer2, an orientation control layer3, a magnetic recording layer4, and a protective layer5formed on a non-magnetic substrate1. The orientation control layer3has a seed layer6and an intermediate layer7. The seed layer6is made of a Cu—Ti alloy that has a face-centered cubic structure and includes Cu as a main component. The Cu—Ti alloy has a (111) crystal plane oriented substantially perpendicular to the surface of the non-magnetic substrate1and has a pseudo-hexagonal structure.

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