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Mixed system Cs3Cu3Cl8-xBrxOH with weakly connected Cu-triangles

Title data

van Well, Natalija ; Bolte, Michael ; Eisele, Claudio ; Keller, Lukas ; Schefer, Jürg ; van Smaalen, Sander:
Mixed system Cs3Cu3Cl8-xBrxOH with weakly connected Cu-triangles.
In: Journal of Physics and Chemistry of Solids. Vol. 140 (May 2020) . - No. 109386.
ISSN 0022-3697
DOI: https://doi.org/10.1016/j.jpcs.2020.109386

Project information

Project financing: Deutsche Forschungsgemeinschaft
Paul Scherrer Institut

Abstract in another language

To study the relationship between the properties of low-dimensional spin systems with weakly coupled Cu-triangles and their crystal structure, single crystals of Cs3Cu3Cl8OH (1) and the new Cs3Cu3Cl7.6Br0.4OH (2) were grown. Both compounds are isostructural and crystallize in a monoclinic structure with space group P21/c. The magnetic susceptibility of (1) shows a maximum at 2.23 K and of (2) at 2.70 K, which are attributed to antiferromagnetic phase transitions. Furthermore, the magnetization along the b-axis at 1.9 K for both compounds shows a spin-flop transition into a new antiferromagnetic phase. This transition occurs at 0.61 T for (1) and at 2.0 T for (2). The antiferromagnetic order can be suppressed by a magnetic field BC1 = 1.1 T for (1) and BC2 = 1.2 T for (2). First single crystal neutron diffraction measured on (1) at different temperatures reveals the magnetic signal on the top of the nuclear reflection at (−1 0 0). Its magnetic ordering temperature was found to be at TN1 = 2.12(3) K.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Crystal growth; Inorganic compounds; Crystal structure; Magnetic properties; X-ray diffraction
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography > Chair Crystallography - Univ.-Prof. Dr. Sander van Smaalen
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 02 Sep 2020 07:16
Last Modified: 02 Sep 2020 07:16
URI: https://eref.uni-bayreuth.de/id/eprint/56710