Ruthenium-aluminum underlayer for magnetic recording media

Details Ruthenium-aluminum underlayer for magnetic recording media Ruthenium-aluminum underlayer for magnetic recording media

2005-06-21

2005-06-21

Bernatz, Kevin M. (Department: 1773)

Stock material or miscellaneous articles

All metal or with adjacent metals

Having magnetic properties, or preformed fiber orientation...

C428S651000, C428S652000, C428S678000, C428S332000, C428S409000, C428S690000, C204S192200, C205S255000, C205S271000

Reexamination Certificate

active

06908689

ABSTRACT:
A magnetic recording medium containing a B-2 structured ruthenium-aluminum underlayer comprising a (200) crystallographic orientation with a thickness from about 50 Å to about 800 Å, and a magnetic layer with a Co(11.0) crystallographic orientation, and a method of making the same are disclosed. The medium deposited on mechanically textured and surface-oxidized NiP film has a relatively high remanent coercivity and a relatively high signal to medium noise ratio even at low OR-Mrt.

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