Ferroelastic phase transition in Na(: Brillouin scattering studies and theoretical modeling
Authors:
- 1 January 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 43 (1) , 641-648
Abstract
For Na( , Brillouin shifts related to elastic constants have been measured in the range of temperatures between 140 and 300 K. All modes have been affected, to various degrees, by the 2/m→3¯m transition at about 231 K. A Landau model has been proposed in order to provide a qualitative description of the ferroelastic transition. It is argued that it is a weakly first-order transition.
Keywords
This publication has 12 references indexed in Scilit:
- Low temperature ferroelastic phase transition in K 3 Na(CrO 4 ) 2Ferroelectrics, 1990
- Brillouin scattering studies of the ferroelastic phase transition inPhysical Review B, 1987
- Optical, pyroelectric and X-ray topographic studies of twin domains and twin boundaries in KLiSO4Acta crystallographica Section B, Structural science, crystal engineering and materials, 1987
- Crystal structure of KLiSO4 as a function of temperatureActa crystallographica Section B, Structural science, crystal engineering and materials, 1985
- Ferroelastic properties of LiCsSO4 crystalsFerroelectrics, 1983
- Determination of the elastic constants of single crystals of fcc and hcp argon alloys by Brillouin scatteringPhysical Review B, 1982
- Structural transitions of ß-K 2 SO 4 ,-type crystalsFerroelectrics, 1980
- Hexagonal-Orthorhombic Phase Transition and Ferroelasticity in K2SO4 and K2SeO4Journal of the Physical Society of Japan, 1977
- Measurement of the Elastic Constants of Lithium Acetate by Means of the Brillouin EffectPhysical Review B, 1972
- Pure Modes for Elastic Waves in CrystalsJournal of Applied Physics, 1965