RE-BASED ALLOYS USABLE AS DEPOSITION TARGETS FOR FORMING INTERLAYERS IN GRANULAR PERPENDICULAR MAGNE

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PURPOSE : Re-based alloy usable as deposition targets for forming interlayers in granular perpendicular magnetic recording media and a media using the same are provided to improve stability, magnetic characteristic, area recording density and efficiency. CONSTITUTION : A Re-based alloy material comprises : Re of more than 50at%% and at least one alloy element selected from the group consisting of (a) grain size refinement elements X which have an atomic radius larger or smaller than an atomic radius of Re and a solid solubility less than 6at%% in hcp(Hexagonal Close Packed) Re at room or higher temperatures; and (b) lattice matching elements Y which have an atomic radius larger or smaller than the atomic radius of Re and form a solid solution in hcp Re at room or higher temperatures. © KIPO 2008