Critical behavior and magnetocaloric effect in VI${}_3$

Abstract

Layered van der Waals ferromagnets are promising candidates for designing new spintronic devices. Here we investigated the critical properties and magnetocaloric effect connected with ferromagnetic transition in layered van der Waals VI${}_3$ single crystals. The critical exponents $\beta =0.244(5)$ with a critical temperature $T_c=50.10(2)$ K and $\gamma =1.028(12)$ with $T_c=49.97(5)$ K are obtained from the modified Arrott plot, whereas $\delta =5.24(2)$ is obtained from a critical isotherm analysis at $T_c=50$ K. The magnetic entropy change $-\Delta S_M(T,H)$ features a maximum at $T_c$, i.e., $-\Delta S_M^{max}\sim$ 2.64 (2.27) J kg${}^{-1}$ K${}^{-1}$ with out-of-plane (in-plane) field change of 5 T. This is consistent with $-\Delta S_M^{max}$ $\sim$ 2.80 J kg${}^{-1}$ K${}^{-1}$ deduced from heat capacity and the corresponding adiabatic temperature change $\Delta T_{ad}$ $\sim$ 0.96 K with out-of-plane field change of 5 T. The critical analysis suggests that the ferromagnetic phase transition in VI${}_3$ is situated close to a three- to two-dimensional critical point. The rescaled $\Delta S_M(T,H)$ curves collapse onto a universal curve, confirming a second-order type of the magnetic transition and reliability of the obtained critical exponents.

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Cited by in corpus (16)

• Magnetic critical behavior of the van der Waals Fe5GeTe2 crystal with near room temperature ferromagnetism
• VI3: a 2D Ising ferromagnet
• High-Temperature Ferromagnetic Semiconductors: Janus Monolayer Vanadium Trihalides
• Pressure-induced huge increase of Curie temperature of the van der Waals ferromagnet VI3
• Large orbital magnetic moment in VI3
• Valence band electronic structure of the van der Waals ferromagnetic insulators: VI${}_3$ and CrI${}_3$
• Strain tunability of perpendicular magnetic anisotropy in van der Waals ferromagnets VI3
• Magnetic order and its interplay with structure phase transition in van der Waals ferromagnet VI${}_3$
• Two-dimensional ferromagnetic spin-orbital excitations in the honeycomb VI${}_3$
• Interplay of spin magnetism, orbital magnetism, and atomic structure in layered van der Waals ferromagnet VI${}_3$
• The surface degradation and its impact on the magnetic properties of bulk VI_3
• Growth of high-quality CrI3 single crystals and engineering of its magnetic properties via V and Mn doping
• Terahertz Magnetic and Lattice Excitations in van der Waals Ferromagnet VI3
• Robust intralayer antiferromagnetism and tricriticality in a van der Waals compound: VBr3 case
• Evidence of temperature-dependent interplay between spin and orbital moment in van der Waals ferromagnet VI3
• Physical properties of the layered $f$-electron van der Waals magnet Ce${}_2$Te${}_5$