Stock material or miscellaneous articles – All metal or with adjacent metals – Having magnetic properties – or preformed fiber orientation...
Reexamination Certificate
2005-01-04
2005-01-04
Morris, Terrel (Department: 1773)
Stock material or miscellaneous articles
All metal or with adjacent metals
Having magnetic properties, or preformed fiber orientation...
C428S637000, C428S651000, C428S661000, C428S667000, C428S678000, C428S690000
Reexamination Certificate
active
06838188
ABSTRACT:
A magnetic recording medium such as a magnetic disk includes a NiP or ceramic glass substrate on which a seedlayer is sputtered in a low pressure inert gas atmosphere, the seedlayer comprising a ternary or quaternary alloy formed from a B2lattice type alloy such as NiAl, CoTi, CoAl, NiTi, FeTi, CoFe, CoHf, CuZn, CoZr, and MnAl. For quaternary alloys in which elements X and Y are added to the B2type alloy, X can be chosen from one or more elements selected from the group consisting of Co, Ni, Fe, Cu, V, Mn, and Zn, and Y can be chosen from one or more elements selected from the group consisting of Al, Nb, Ta, Hf, Zr, Zn, Ag, Au, Pt and Pd. The resulting seedlayer preferably has an A2lattice structure.
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Bernatz Kevin M.
Maxtor Corporation
Morris Terrel
Sigmond David M.
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