2018/03/12 by Yu Liu, C. Petrovic · 1 citation
Physics and Astronomy · #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.96.134410
published as Physical Review B 96, 134410 (2017)
arxiv created 2018/03/12 · arxiv updated 2018/03/14
The critical properties of flux-grown single-crystalline quasi-two-dimensional weak itinerant ferromagnet Cr0.62Te were investigated by bulk dc magnetization around the paramagnetic (PM) to ferromagnetic (FM) phase transition. Critical exponents β= 0.315(7) with a critical temperature Tc = 230.6(3) K and γ= 1.81(2) with Tc = 229.1(1) K are obtained by the Kouvel-Fisher method whereas δ= 6.35(4) is obtained by a critical isotherm analysis at Tc = 230 K. With these obtained exponents, the magnetization-field-temperature curves collapse into two independent curves following a single scaling equation M|(T-Tc)/(Tc)|-β = f_±(H|(T-Tc)/(Tc)|-βδ) around Tc, suggesting the reliability of the obtained exponents. Additionally, the determined exponents of Cr0.62Te exhibit an Ising-like behavior with a change from short-range order to long-range order in the nature of magnetic interaction and with an extension from 2D to 3D on cooling through Tc.