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Crystals 2015, 5(2), 226-243; doi:10.3390/cryst5020226

Novel S = 1/2 Kagome Lattice Materials: Cs2TiCu3F12 and Rb2TiCu3F12

School of Chemistry and EaStChem, University of St Andrews, St Andrews KY16 9ST, UK
Department of Chemistry, M. V. Lomonosov Moscow State University, 119991 GSP-1 Moscow, Russia
Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
Department of Low Temperature Physics and Superconductivity, Physics Faculty, M. V. Lomonosov Moscow State University, 119991 GSP-1 Moscow, Russia
Theoretical Physics and Applied Mathematics Department, Ural Federal University, 620002 Ekaterinburg, Russia
National University of Science and Technology "MISiS", 119049 Moscow, Russia
School of Chemistry and EaStChem, University of Edinburgh, Edinburgh EH9 3JZ, UK
Author to whom correspondence should be addressed.
Academic Editor: Helmut Cölfen
Received: 18 March 2015 / Revised: 16 April 2015 / Accepted: 21 April 2015 / Published: 5 May 2015
View Full-Text   |   Download PDF [883 KB, uploaded 5 May 2015]   |  


Two new members of the A2B′Cu3F12 family of kagome-related materials have been prepared, in order to further understand the crystal-chemical relationships, phase transitions and magnetic behaviour within this family of potentially frustrated S = ½ two-dimensional quantum magnets. Cs2TiCu3F12 adopts a crystal structure with the ideal kagome lattice topology (space group R m) at ambient temperature. Diffraction studies reveal different symmetry-lowering structural phase transitions in single crystal and polycrystalline forms at sub-ambient temperatures, with the single crystal form retaining rhombohedral symmetry and the powder form being monoclinic. In both cases, long-range antiferromagnetic order occurs in the region 16–20 K. Rb2TiCu3F12 adopts a distorted triclinic structure even at ambient temperatures. View Full-Text
Keywords: kagome lattice; magnetic; fluoride; phase transition kagome lattice; magnetic; fluoride; phase transition

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Downie, L.J.; Ardashnikova, E.I.; Tang, C.C.; Vasiliev, A.N.; Berdonosov, P.S.; Dolgikh, V.A.; de Vries, M.A.; Lightfoot, P. Novel S = 1/2 Kagome Lattice Materials: Cs2TiCu3F12 and Rb2TiCu3F12. Crystals 2015, 5, 226-243.

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