| 摘要 |
Disclosed is a Co—Fe alloy for soft magnetic films used in perpendicular magnetic recording media, etc., which maintains high soft magnetic properties and has excellent weather resistance. Disclosed is a Co—Fe alloy for soft magnetic films, which is a Co—Fe alloy the composition formula of which is expressed at atomic ratio as ((Co100−X—FeX)100−Y—NiY)100−(a+b+c)-Mla-M2b-Tic, where 5≦̸X≦̸80, 0≦̸Y≦̸25, 2≦̸a≦̸6, 2≦̸b≦̸10, and 0.5≦̸c≦̸10, the remainder of which is composed of unavoidable impurities, and wherein the element M1 in the aforementioned composition formula is one or two or more elements selected from (Zr, Hf, Y), and the element M2 in the aforementioned composition formula is one or two or more elements selected from (Ta, Nb).
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