Tetragonal mixed system $C{s}_{2}CuC{l}_{4-x}B{r}_x$ complemented by the tetragonal phase realisation of $C{s}_{2}CuC{l}_4$

Abstract

Realisation of the tetragonal phase of $C{s}_{2}CuC{l}_4$ 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 $C{s}_{2}CuC{l}_{2.9}B{r}_{1.1}$, $C{s}_{2}CuC{l}_{2.5}B{r}_{1.5}$, $C{s}_{2}CuC{l}_{2.2}B{r}_{1.8}$ and presents consistent results for such quasi $2-D$ antiferromagnets. Structural investigation at low temperature for $C{s}_{2}CuC{l}_{2.2}B{r}_{1.8}$ 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.

Preprint

References in corpus (5)

• The antiferromagnetic spin-1/2 Heisenberg model on the square lattice in a magnetic field
• The stable phases of the Cs2CuCl4-xBrx mixed systems
• Observation of new magnetic ground state in frustrated quantum antiferromagnet spin liquid system Cs2CuCl4
• High-Temperature Series Expansion for Spin-1/2 Heisenberg Models
• Magnetic phase diagram of the triangular antiferromagnetic $C{s}_{2}CuC{l}_{4-x}B{r}_x$ mixed system