RE-BASED ALLOYS USABLE AS DEPOSITION TARGETS FOR FORMING INTERLAYERS IN GRANULAR PERPENDICULAR MAGNETIC RECORDING MEDIA & MEDIA UTILIZING SAID ALLOYS
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United States of America Patent
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N/A
Issued Date -
Jul 10, 2008
app pub date -
Oct 23, 2007
filing date -
Jan 8, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A Re-based alloy material comprises >50 at. % Re and at least one alloying material selected from grain size refinement elements X which have an atomic radius larger or smaller than that of Re and a solid solubility <.about.6 at. % in hcp Re at room or higher temperatures, and lattice matching elements Y which have an atomic radius larger or smaller than that of Re and form a solid solution in hcp Re at room or higher temperatures. The alloy material may further comprise at least one material selected from the group consisting of oxides, nitrides, and carbides. Targets comprising the Re-based alloy material are useful in sputter deposition of improved interlayers for obtaining optimally structured granular perpendicular magnetic recording layers.
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