论文标题
FECR2TE4中Cr-Fe-Cr trimers的三维Ising Ferrimagnetism
Three-dimensional Ising Ferrimagnetism of Cr-Fe-Cr trimers in FeCr2Te4
论文作者
论文摘要
我们对三元基因化的单晶体中的磁性关键行为进行了全面研究，$ _2 $ _2 $ te $ _4 $在$ t_c $ $ $ \ sim $ 123 k下经历了铁磁过渡。关键指数$β= 0.30（1）$，$ t_c = 122.4（5）$ k，$γ，$γ= 1.22（1）$，$ t_c = 122.8（1）$ k，$δ= 4.24（2）$ at $ t_c $ $ \ $ \ sim $ \ sim $ 123 k表明，spins spins spins of spins of三维$ $ = 0.24 $ = 0.2555555555，和β5555，和$δ$ = 4.82）型号以及旋转之间有吸引力的远程相互作用，衰减为$ j（r）\大约r^{ - 4.88} $。我们的结果表明，FECR $ _2 $ te $ _4 $中的Ferrimagnetism是由于抗铁磁性耦合的CR-FE-CR Trimers中流动的铁磁性。
We carried out a comprehensive study of magnetic critical behavior in single crystals of ternary chalcogenide FeCr$_2$Te$_4$ that undergoes a ferrimagnetic transition below $T_c$ $\sim$ 123 K. Detailed critical behavior analysis and scaled magnetic entropy change indicate a second-order ferrimagentic transition. Critical exponents $β= 0.30(1)$ with $T_c = 122.4(5)$ K, $γ= 1.22(1)$ with $T_c = 122.8(1)$ K, and $δ= 4.24(2)$ at $T_c$ $\sim$ 123 K suggest that the spins approach three-dimensional Ising ($β$ = 0.325, $γ$ = 1.24, and $δ$ = 4.82) model coupled with the attractive long-range interactions between spins that decay as $J(r)\approx r^{-4.88}$. Our results suggest that the ferrimagnetism in FeCr$_2$Te$_4$ is due to itinerant ferromagnetism among the antiferromagnetically coupled Cr-Fe-Cr trimers.
