Temperature dependence of the AV3O7 (A = Ca, Sr) structure.
The V(4+) (spin (1/2)) oxovanadates AV(3)O(7) (A = Ca, Sr) were synthesized and studied by means of single-crystal X-ray diffraction. The room-temperature structures of both compounds are orthorhombic and their respective space groups are Pnma and Pmmn. The previously assumed structure of SrV(3)O(7) has been revised and the temperature dependence of both crystal structures in the temperature ranges 297-100 K and 315-100 K, respectively, is discussed for the first time.
Prinz
Sebastian
S
Institut für Kristallographie der RWTH Aachen, Jägerstrasse 17-19, 52066 Aachen, Germany. prinz@xtal.rwth-aachen.de
Sparta
Karine M
KM
Roth
Georg
G