Anti-ferromagnetically coupled perpendicular magnetic...

Details Anti-ferromagnetically coupled perpendicular magnetic... Anti-ferromagnetically coupled perpendicular magnetic...

2004-11-01

2010-11-30

Bernatz, Kevin M (Department: 1785)

Stock material or miscellaneous articles

Magnetic recording component or stock

Thin film media

C428S836200

Reexamination Certificate

active

07842409

ABSTRACT:
The present invention relates to perpendicular magnetic recording media with improved signal-to-medium noise ratio (“SMNR”) and thermal stability, which media include a pair of vertically spaced-apart perpendicular ferromagnetic layers which are anti-ferromagnetically coupled (“AFC”) across a non-magnetic spacer layer. The invention is of particular utility in the fabrication of data/information storage and retrieval media, e.g., hard disks, having ultra-high areal recording/storage densities.

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