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

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...

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Main Authors: Lewis J. Downie, Elena I. Ardashnikova, Chiu C. Tang, Alexandre N. Vasiliev, Peter S. Berdonosov, Valery A. Dolgikh, Mark A. de Vries, Philip Lightfoot
Format: Article
Language:English
Published: MDPI AG 2015-05-01
Series:Crystals
Subjects:
Online Access:http://www.mdpi.com/2073-4352/5/2/226
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author Lewis J. Downie
Elena I. Ardashnikova
Chiu C. Tang
Alexandre N. Vasiliev
Peter S. Berdonosov
Valery A. Dolgikh
Mark A. de Vries
Philip Lightfoot
author_facet Lewis J. Downie
Elena I. Ardashnikova
Chiu C. Tang
Alexandre N. Vasiliev
Peter S. Berdonosov
Valery A. Dolgikh
Mark A. de Vries
Philip Lightfoot
author_sort Lewis J. Downie
collection DOAJ
description 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.
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spelling doaj.art-a416d1eec31f4e5eb1a13051966fbe832022-12-22T04:04:13ZengMDPI AGCrystals2073-43522015-05-015222624310.3390/cryst5020226cryst5020226Novel S = 1/2 Kagome Lattice Materials: Cs2TiCu3F12 and Rb2TiCu3F12Lewis J. Downie0Elena I. Ardashnikova1Chiu C. Tang2Alexandre N. Vasiliev3Peter S. Berdonosov4Valery A. Dolgikh5Mark A. de Vries6Philip Lightfoot7School of Chemistry and EaStChem, University of St Andrews, St Andrews KY16 9ST, UKDepartment of Chemistry, M. V. Lomonosov Moscow State University, 119991 GSP-1 Moscow, RussiaDiamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, UKDepartment of Low Temperature Physics and Superconductivity, Physics Faculty, M. V. Lomonosov Moscow State University, 119991 GSP-1 Moscow, RussiaDepartment of Chemistry, M. V. Lomonosov Moscow State University, 119991 GSP-1 Moscow, RussiaDepartment of Chemistry, M. V. Lomonosov Moscow State University, 119991 GSP-1 Moscow, RussiaSchool of Chemistry and EaStChem, University of Edinburgh, Edinburgh EH9 3JZ, UKSchool of Chemistry and EaStChem, University of St Andrews, St Andrews KY16 9ST, UKTwo 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.http://www.mdpi.com/2073-4352/5/2/226kagome latticemagneticfluoridephase transition
spellingShingle Lewis J. Downie
Elena I. Ardashnikova
Chiu C. Tang
Alexandre N. Vasiliev
Peter S. Berdonosov
Valery A. Dolgikh
Mark A. de Vries
Philip Lightfoot
Novel S = 1/2 Kagome Lattice Materials: Cs2TiCu3F12 and Rb2TiCu3F12
Crystals
kagome lattice
magnetic
fluoride
phase transition
title Novel S = 1/2 Kagome Lattice Materials: Cs2TiCu3F12 and Rb2TiCu3F12
title_full Novel S = 1/2 Kagome Lattice Materials: Cs2TiCu3F12 and Rb2TiCu3F12
title_fullStr Novel S = 1/2 Kagome Lattice Materials: Cs2TiCu3F12 and Rb2TiCu3F12
title_full_unstemmed Novel S = 1/2 Kagome Lattice Materials: Cs2TiCu3F12 and Rb2TiCu3F12
title_short Novel S = 1/2 Kagome Lattice Materials: Cs2TiCu3F12 and Rb2TiCu3F12
title_sort novel s 1 2 kagome lattice materials cs2ticu3f12 and rb2ticu3f12
topic kagome lattice
magnetic
fluoride
phase transition
url http://www.mdpi.com/2073-4352/5/2/226
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