论文标题
CRCL $ _3 $中各向异性磁环效应和关键行为
Anisotropic magnetocaloric effect and critical behavior in CrCl$_3$
论文作者
论文摘要
我们报告了范德华晶体Crcl $ _3 $中各向异性磁笼效应和磁性关键行为。最大磁熵更改$-ΔS_M^{max} \ sim 14.6 $ j kg $^{ - 1} $ k $^{ - 1} $和相对冷却能力$ rcp \ sim 340.3 $ j kg $^$ j kg $^{ - 1} $接近$ t_c $ agne n $ t_c $ agne n $ t_c $ nak nake of cri $ tab cri $ _________ crbr $ _ {3} $。重新缩放的$ΔS_M（t，h）$曲线塌陷在通用曲线上，确认了二阶铁磁过渡。 $ t_c $附近的进一步关键行为分析提出了一组关键指数$β$ = 0.28（1），$ t_c $ = 19.4（2）k，$γ$ = 0.89（1），$ t_c $ = 18.95（8）k，$δ$ = 4.6（$δ$ = 4.6（1），$ t_c $ = 19 k，均为19 k，这些模型很接近那些trict tr。
We report anisotropic magnetocaloric effect and magnetic critical behavior in van der Waals crystal CrCl$_3$. The maximum magnetic entropy change $-ΔS_M^{max} \sim 14.6$ J kg$^{-1}$ K$^{-1}$ and the relative cooling power $RCP \sim 340.3$ J kg$^{-1}$ near $T_c$ with a magnetic field change of 5 T are much larger when compared to CrI$_{3}$ or CrBr$_{3}$. 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.
