Concentration dependence of magnetic moment in Ni50-xCoxMn50-yZy, (Z=In,Sn) Heusler alloys

The concentration dependence of magnetic properties in the austenite phase of NiCoMnIn and NiCoMnSn Heusler alloys was systematically investigated by the magnetization measurements. The T-C for Ni((50-x))CoxMn((50-y))Sn(y) alloys linearly increases with increasing the Co content and fixed Sn content. Although showing a concave curve for Ni50Mn(50-y)Sny ternary alloys, the Sn content-dependence of magnetic moment per formula unit changes from the concave curve to a straight line when Co is substituted for Ni. On the other hand, the In content-dependence of the magnetic moment for Ni45Co5Mn(50-y)Iny alloys is perfectly linear as is that in the Ni50Mn(50-y)Iny ternary alloys. (C) 2010 American Institute of Physics. [doi:10.1063/1.3525168]