Brillouin scattering study of elastic anomaly in (KCN)x(KBr)1−x system |
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| Authors: | Sushil K. Satija C.H. Wang |
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| Affiliation: | Department of Chemistry University of Utah Salt Lake City, Utah 84112, USA |
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| Abstract: | Brillouin scattering is used to study concentration and temperature dependence of transverse acoustic phonon frequency ωTA (110) in (KCN)x(KBr)1?x mixed crystals. Unlike pure KCN, mixed xrystals with x < 0.75 show no phase transition upon cooling, however, in these crystals we find a minimum in ωTA as a function of temperature. This minimum can be understood in terms of dynamical theory of rotation-translation coupling in molecular crystals. |
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