Dielectric, thermal, and elastic properties of Cs2CuCl4 crystals are studied at temperature from 80 K to their melting point. No anomalies typical of incommensurate phase transitions are observed. The changes in ϵ33 as well as in the c33 and c23 components of the elasticity tensor suggest the possibility of a phase transition at a temperature below 80 K. The anisotropy of elasticity for quasilongitudinal, quasitransverse, and pure transverse waves is determined.
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Tylczyński et al. (1992) studied this question.
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