Stable phases of the Cs2CuCl4-xBrx mixed systems

  title={Stable phases of the Cs2CuCl4-xBrx mixed systems},
  author={Ned Kruger and Steffen Belz and F. Schossau and Amir A. Haghighirad and Pham Thanh Cong and Bernd Wolf and Saskia Gottlieb-Schoenmeyer and Franz Ritter and Wolf Assmus},
  journal={Crystal Growth \& Design},
Starting from Cs2CuCl4 and Cs2CuBr4, we focus on the growth of the Cs2CuCl4−xBrx mixed crystals from aqueous solution and the investigation of the occurring structural variations. The well-known orthorhombic structure (space group Pnma) of the end members of this system is interrupted within the intermediate composition range from Cs2CuCl3Br1 to Cs2CuCl2Br2, if the growth takes place at room temperature. Within this range, a new tetragonal phase is found (space group I4/mmm). However, in case… 
Magnetic Phase Diagram of the Triangular Antiferromagnetic Cs2 CuCl4− x Br x Mixed System
The novel magnetic phase diagram of the Cs2CuCl4−xBrx mixed system is established by means of single crystal neutron diffraction in the lowest temperature region and zero magnetic field. Two
Strain-induced magnetic moment enhancement in frustrated antiferromagnet Cs2CuBr4.
An unusual enhancement of the magnetic moment deduced from the ZFC susceptibility is observed in both series samples, likely due to the recovery of the Cu-3d orbital magnetic moments by strain-induced suppression of Jahn-Teller distortion in CuBr42 tetrahedra.
Tetragonal Mixed System Cs2CuCl4–xBrx Complemented by the Tetragonal Phase Realization of Cs2CuCl4
Realization of the tetragonal phase of Cs2CuCl4 is possible using specific crystal growth conditions at a temperature below 281 K. This work deals with the comparison of the magnetic susceptibility...
Spin relaxation in Cs2CuCl4−xBrx
The quantum-spin S = 1=2 chain system Cs$_2$CuCl$_4$ is of high interest due to competing anti-ferromagnetic intra-chain J and inter-chain exchange J' interactions and represents a paramount example
Magneto‐Structural Properties of the Layered Quasi‐2D Triangular‐Lattice Antiferromagnets Cs2CuCl4−xBrx for x = 0, 1, 2, and 4
A study of the magnetic susceptibility under variable hydrostatic (He gas) pressure on single crystals of Cs2CuCl4−xBrx is presented. This work includes the border compounds x = 0 and 4, known as
Pulsed-Field Ultrasonic Experiments in the Quasi-2D Antiferromagnet Cs2CuBr4
The magnetic insulators Cs2CuCl4 and Cs2CuBr4 are model systems for a frustrated quasi-two-dimensional triangular-lattice spin-1/2 Heisenberg antiferromagnet with a weak interlayer coupling. The
Magnetic‐Field‐Controlled Quantum Critical Points in the Triangular Antiferromagnetic Cs2CuCl4‐xBrx Mixed System
The triangular antiferromagnetic Cs2CuCl4‐xBrx mixed system is studied by neutron single‐crystal diffraction in magnetic field. It shows a rich magnetic phase diagram consisting of four regimes
Electronic Modulation in Site-Selective Occupation of Quasi-2D Triangular-Lattice Cs2CuCl4-xBrx Perovskite Probed by Surface-Sensitive Characterization.
The strong electronic modulation and the local magnetic spectroscopy results in these solution-based and low-temperature-growth materials will pave the way toward energy- and cost-efficient perovskite devices.
Pressure-Induced Phase Transition, Jahn-Teller Suppression, Optical and Electronic Property Evolutions in Ruddlesden-Popper Perovskites Rb2CuCl4-xBrx.
The impact of pressure on the structural and physical properties in two-dimensional Rb2CuCl4-xBrx provides in-depth understanding on the structure design of functional halide perovskites at ambient conditions.
Ultrasonic investigations near the B-induced quantum critical point of the triangular-lattice antiferromagnet Cs2CuCl4
Measurements of the longitudinal elastic constants c11, c22 and c33 and the ultrasonic attenuation α of the quasi-two-dimensional triangular-lattice spin-1/2 Heisenberg antiferromagnet Cs2CuCl4