Magnetic recording media with Cu-containing magnetic layers

Abstract

A magnetic recording medium including at least one Cu-containing magnetic recording layer (CuML) comprised of a Cu-containing magnetic alloy material selected from the group consisting of: (a) a CoCrPtBCu alloy having a composition represented by the formula Co100-x-y-z-αCrxPtyBzCu60 , wherein 0<x≦20, 0<y≦30, 0<z≦24, and 0<α≦10; (b) a CoCrPtBCu alloy having a composition represented by the formula Co100-x-y-z-αCrxPtyBzCuα, wherein 0<x≦30, 0<y≦30, 7<z≦24, and 0<α≦10; and (c) a CoCrTaCu alloy having a composition represented by the formula Co100-x-y-αCrxTayCuα, containing less than 30 at. % Cr, up to 8 at. % Ta, and up to 10 at. % Cu.

Dependencies are inferred from the claim text.