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arXiv · 1310.3999

Elastic Properties of KH2PO4 at the ferroelectric phase transition

A. E. Petrova·S. M. Stishov
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Abstract

We report results of ultrasonic studies of a single crystal of KDP in the temperature range 2-300 K. The longitudinal and transverse sound velocities along [001] and [100] directions were obtained as functions of temperature. The analysis of the temperature evolution of pseudomoduli $c_{11}$ and $c_{33}$ in the ferroelectric phase shows that these quantities can be approximated by the expression $c_{ii}\sim(T-T_0)^{0.5}$ in the temperature range 0.001K$<T_c-T<$0.2K.

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A. E. Petrova, S. M. Stishov. 2013-10-15. Elastic Properties of KH2PO4 at the ferroelectric phase transition. https://doi.org/10.1016/j.ssc.2013.07.029

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