Structural Phase Transition of Layer Compound (C2H5NH3)2FeCl4
- 1 May 1983
- journal article
- research article
- Published by Physical Society of Japan in Journal of the Physics Society Japan
- Vol. 52 (5), 1669-1675
- https://doi.org/10.1143/jpsj.52.1669
Abstract
The sequence of the structural phase transitions of the layer compound (C 2 H 5 NH 3 ) 3 FeCl 4 has been determined with the ultrasonic, dielectric and polarized microscope measurements as following; Phase I ( D 4 h 17 )–(378.8 K)–Phase II ( D 2 h 18 )–(203.5 K)–Phase III–(133.7 K)–Phase IV. The set of the critical exponents obtained with ultrasonic methods are explained by the results of the renormalization group theory on the three dimensional XY model. The ferroelastic domains are observed in the phase II and phse III. The anomaly of he dielectric constant is found near the II-III phase transition point.Keywords
This publication has 14 references indexed in Scilit:
- Critical dynamics of the system in FePhysical Review B, 1982
- Elastic and thermal properties of the layered compound (CH3NH3)2FeCl4Journal of Physics C: Solid State Physics, 1982
- Elastic soft mode in perovskite-type layer-structure materialsPhysical Review B, 1980
- Elastic properties of the layer-structure material (CH3NH3)2MnCl4Journal of Physics C: Solid State Physics, 1979
- Symmetry of the lattice vibrations in perovskite-type layer structuresJournal of Physics C: Solid State Physics, 1977
- X-ray study of structural phase transitions in the perovskite-type layer compound (CH3NH3)2CdCl4Physica Status Solidi (a), 1976
- On the importance of hydrogen bonding for the structural phase transitions in (CH3NH3)2MnCl4. A single-crystal neutron diffraction studyPhysica Status Solidi (a), 1976
- Symmetry and lattice-dynamic aspects of structural phase transitions in (CH3NH3)2MnCL4 and related compoundsJournal of Physics and Chemistry of Solids, 1975
- Birefringence, X-ray and neutron diffraction measurements on the structural phase transitions of (CH3NH3)2 MnCl4 and (CH3NH3)2FeCl4Solid State Communications, 1974
- Experiments on simple magnetic model systemsAdvances in Physics, 1974