Some optical and thermal properties of CsCuCl3and its phase transition near 423K
- 7 January 1975
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 8 (1) , L12-L16
- https://doi.org/10.1088/0022-3719/8/1/003
Abstract
Optical rotatory power, birefringence and thermal expansion were measured near the structural phase transition point of CsCuCl3. All these quantities show discontinuous changes at the transition point. Enantiomorphic domains were observed in the low-temperature phase and irreversible temperature dependence of the optical rotation angle is ascribed to this domain formation. Helical atomic displacements are explained in terms of the condensation of doubly degenerate E1 phonon modes at +or-q0=(0 0+or-2 pi /3c) which is induced by the cooperative Jahn-Teller effect.Keywords
This publication has 5 references indexed in Scilit:
- Critical Dynamical Phenomena in Pseudospin-Phonon Coupled SystemsJournal of the Physics Society Japan, 1974
- Some electrical and optical studies in CsCuCl3 crystalsPhysica Status Solidi (a), 1973
- A phase transition in a compound with helical electric dipole structure: CsCuCl3Solid State Communications, 1971
- Preparation and properties of cesium cupric chlorideJournal of Crystal Growth, 1970
- A Redetermination of the Crystal Structure of CsCuCl3Inorganic Chemistry, 1966