Decoration–iteration transformation and Monte Carlo simulation for mixed ferrimagnetic ternary alloy

Abstract The spin fluctuation effect on the appearance of plural compensation temperatures in ferrimagnet is studied for a simple mixed ferro-ferrimagnetic ternary alloy model of the type AX ( X = B p C 1 - p ) on a decorated lattice consisting of three kinds of magnetic ions A , B and C . The combination of molecular field approximation, decorated–iteration transformation and the Monte Carlo simulation enabled us to discuss systematically the effect of inclusion of spin fluctuation and also showed a possibility to discuss the effect of spin fluctuation and that of concentration distribution separately.