论文标题
四方混合系统$ CS_2CUCL_ {4-x} br_x $由$ CS_2CUCL_4 $的四方阶段实现补充
Tetragonal mixed system $Cs_2CuCl_{4-x}Br_x$ complemented by the tetragonal phase realisation of $Cs_2CuCl_4$
论文作者
论文摘要
使用特定的晶体生长条件在低于$ 281K $的温度下，可以实现$ CS_2CUCL_4 $的四方相。这项工作涉及将这种新四方化合物的磁化能力和磁化与四大型$ cs_2cucl_ {2.9} br_ {1.1} $，$ cs_2cucl_ {2.5} br_ {2.5} br_ {1.5} $ cs_2cuccl_ and for and and and} $ cs_2cucl_ {1.2ccuccl_ and for totagientia敏感性和磁性的比较。这样的准$ 2-D $抗铁磁铁。 $ CS_2CUCL_ {2.2} br_ {1.8} $在低温下的结构调查显示没有相变。该结构保留在四方对称性$ i4/mmm $中。此外，该四方化合物通过中子衍射实验在$ t_n = 11.3k $确认其抗fiferromagnetic性质的情况下，通过中子衍射实验进行了几种对应于传播矢量$ k =（0、0、0）$的磁反射。
Realisation of the tetragonal phase of $Cs_2CuCl_4$ is possible using specific crystal growth conditions at a temperature below $281K$. This work deals with the comparison of the magnetic susceptibility and the magnetization of this new tetragonal compound with the magnetic behaviour of tetragonal $Cs_2CuCl_{2.9}Br_{1.1}$, $Cs_2CuCl_{2.5}Br_{1.5}$, $Cs_2CuCl_{2.2}Br_{1.8}$ and presents consistent results for such quasi $2-D$ antiferromagnets. Structural investigation at low temperature for $Cs_2CuCl_{2.2}Br_{1.8}$ shows no phase transition. The structure remains in the tetragonal symmetry $I4/mmm$. Furthermore, several magnetic reflections corresponding to the propagation vector $k = (0, 0, 0)$ are observed for this tetragonal compound through neutron diffraction experiments below the magnetic phase transition at $T_N = 11.3K$ confirming its antiferromagnetic nature.
