Light scattering study of the phase transition in s y m- triazine
- 15 March 1982
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 76 (6) , 3218-3224
- https://doi.org/10.1063/1.443337
Abstract
The ferroelastic phase transition in sym-triazine C3N3H3 has been investigated by means of Brillouin scattering and correlation spectroscopy. Soft TA modes are observed by Brillouin scattering but a well-defined central peak could not be found. Near the transition in the high temperature phase a 50% increase in Rayleigh intensity is found. No correlation function was observed in the time domain between 1 and 10−6 s. These results are discussed by a Landau mean field theory and dynamical rotation–translation coupling theory.Keywords
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