Abstract

Concentration dependence of the Neel temperature of /spl gamma/-Mn/sub 100-x/Ru/sub x/ (31/spl les//spl times//spl les/37) alloy systems has been investigated. The Neel temperature increases with decreasing Mn concentration in analogy with /spl gamma/-Mn-Ir and /spl gamma/-Mn-Rh alloys. The Neel temperature of the present alloy system is the highest in disordered /spl gamma/-Mn-TM (TM/spl equiv/Fe,Ni,Rh,Pd,Ir and Pt) alloys, suggesting that the Neel temperature becomes higher with a decreasing number of 3d electrons in the Mn site.

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