TY - JOUR
T1 - Novel S = 1/2 kagome lattice materials
T2 - Cs2TiCu3F12 and Rb2TiCu3F12
AU - Downie, Lewis James
AU - Ardashnikova, Elena I.
AU - Tang, Chiu C.
AU - Vasiliev, Alexandre N.
AU - Berndonosov , Peter S.
AU - Dolgikh, Valery A.
AU - de Vries , Mark A.
AU - Lightfoot, Philip
N1 - The collaboration between the University of St Andrews and Moscow State University was funded by a Royal Society International Exchanges grant, in collaboration with the Russian Foundation for Basic Research (12-03-92604). Lewis Downie thanks the EPSRC for a Ph.D. studentship via a Doctoral Training grant (EP/P505097/1). This work was carried out with the support of the Diamond Light Source, beamtime application EE7980. Alexandre Vasiliev acknowledges support of RFBR through grants Numbers 13-02-00174, 14-02-92002 and 14-02-92693.
PY - 2015/5/5
Y1 - 2015/5/5
N2 - 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.
AB - 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.
KW - Kagome lattice
KW - Magnetic
KW - Fluoride
KW - Phase transition
UR - http://www.mdpi.com/2073-4352/5/2/226/s1
UR - https://www.scopus.com/pages/publications/84930945838
U2 - 10.3390/cryst5020226
DO - 10.3390/cryst5020226
M3 - Article
SN - 2073-4352
VL - 5
SP - 226
EP - 243
JO - Crystals
JF - Crystals
IS - 2
ER -