Anisotropic magnetocaloric effect and critical behavior in CrCl₃

2020/07/14 by Yu Liu, C. Petrovic · 1 citation
Physics and Astronomy · #cond-mat.mtrl-sci

paper · pdf · doi:10.1103/physrevb.102.014424

published as Phys. Rev. B 102, 014424 (2020)

arxiv created 2020/07/14 · arxiv updated 2020/07/16

Abstract

We report anisotropic magnetocaloric effect and magnetic critical behavior in van der Waals crystal CrCl₃. The maximum magnetic entropy change -ΔS_M^max ∼ 14.6 J kg^-1 K^-1 and the relative cooling power RCP ∼ 340.3 J kg^-1 near T_c with a magnetic field change of 5 T are much larger when compared to CrI₃ or CrBr₃. The rescaled ΔS_M(T,H) curves collapse onto a universal curve, confirming the second order ferromagnetic transition. Further critical behavior analysis around T_c presents a set of critical exponents β = 0.28(1) with T_c = 19.4(2) K, γ = 0.89(1) with T_c = 18.95(8) K, and δ = 4.6(1) at T_c = 19 K, which are close to those of theoretical tricritical mean field model.

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