Critical behavior of CrTe1-xSbx ferromagnet

Abstract

The modified Arrott plots and Kouvel$\text{-}$Fisher analysis are used to investigate the critical behavior of $CrT{e}_{1-x}S{b}_x$ ferromagnetic material near its transition temperature $T_c$. The Ferro$\text{-}$Paramagnetic transition is found to be a second$\text{-}$order phase transition. For $x=0.2$, the critical exponents closely follow the Mean Field Model with the estimated values of the exponents: $\beta$ =0.60 $\pm$ 0.03, $\gamma$ =1.00 $\pm$ 0.03 and $\delta$ =2.67 $\pm$ 0.03. We also found with increasing Sb$\text{-}$concentrations, the critical exponents significantly deviate from the mean field values and gradually shift towards the 3$\text{-}$Dimensional behavior. The deviation may indicate changes in the spin configuration with increasing Sb concentrations.