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- Title
Novel S = 1/2 Kagome Lattice Materials: Cs<sub>2</sub>TiCu<sub>3</sub>F<sub>12</sub> and Rb<sub>2</sub>TiCu<sub>3</sub>F<sub>12</sub>.
- Authors
Downie, Lewis J.; Ardashnikova, Elena I.; Tang, Chiu C.; Vasiliev, Alexandre N.; Berdonosov, Peter S.; Dolgikh, Valery A.; de Vries, Mark A.; Lightfoot, Philip
- Abstract
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 = 1/2 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.
- Subjects
CRYSTAL lattices; PHASE transitions; CRYSTAL structure; SINGLE crystals; ANTIFERROMAGNETIC materials; FLUORIDES
- Publication
Crystals (2073-4352), 2015, Vol 5, Issue 2, p226
- ISSN
2073-4352
- Publication type
Article
- DOI
10.3390/cryst5020226