Phase diagrams of nanoparticles of diluted magnetic semiconductors

Abstract

The magnetic properties of diluted magnetic semi conductors (DMS)Cd_1-xMn_xTe are investigated. Using the mean field theory, we have evaluated the critical temperature from the nearest neighbour interactions and the energy exchange for the different diameter of the Cd_0.5Mn_0.5Te nanoparticle. The critical exponents are obtained. The magnetic phase diagrams (T_c versus dilution ) have been determined by the High-temperature series expansions. The critical exponents associated with the magnetic susceptibility (g) and correlation lengths (v) are deduced.