Abstract
The modified Arrott plots and Kouvel-Fisher analysis are used to investigate the critical behavior of CrTe1-xSbx ferromagnetic material near its transition temperature Tc. The Ferro–Paramagnetic transition is found to be a second-order phase transition. For x=0.2, the critical exponents closely follow the Mean Field Model with the estimated values of the exponents: β=0.60±0.03, γ=1.00±0.03 and δ=2.67±0.03. We also found with increasing Sb-concentrations, the critical exponents significantly deviate from the mean field values and gradually shift towards the 3-Dimensional behavior. The deviation may indicate changes in the spin configuration with increasing Sb concentrations.
Highlights
Reduced dimensional magnetic materials are coming out as promising materials for new potential applications and the emerging field of spintronics
According to the de Gennes theory and the double exchange interaction, substituting Sb on the Te site affects the magnetic state of the solid solution CrTe1-xSbx and continually reduces the ferromagnetic transition.[5]
We investigate the effect of Sb substitution on the ferromagnetic state of CrTe1-xSbx and the critical behavior near FM-PM phase transition
Summary
Reduced dimensional magnetic materials are coming out as promising materials for new potential applications and the emerging field of spintronics. The interplay of electrical and magnetic properties of these materials seems to be important for these new applications Their electrical and magnetic properties can be tuned using the charge and spin degree of freedom.[1] the lack of long-range ferromagnetic order in many 2D materials hinders such possibility.[1,2] Recently, Cr-based ternary chalcogenides, CrMX3, where M is a non-transition metal (Sb, Ge) and X is chalcogenides: S, Se or Te, have renewed the interest in their magnetic state and critical behavior as well as practical applications. We used an iterative procedure of the modified Arrott plot along with the Kouvel-Fisher to evaluate the critical exponents and compare the results for x=0.2 and x=0.5 samples.[6,7]
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