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Abstract
An experimental study and analysis is presented of the acoustic properties of Sn2P2(Se0.28S0.72)6 ferroelectric crystals. Complete matrices of elastic stiffness and compliance as well as characteristic acoustic slowness surfaces have been obtained. The directions of propagation and polarisation of the slowest acoustic waves were determined. It was found that the elastic properties and the acoustic wave velocities for Sn2P2(Se0.28S0.72)6 and Sn2P2S6 crystals are almost the same at room temperature.
Acknowledgement
The authors acknowledge financial support of the present study by the Scientific and Technology Centre in Ukraine under the Project No. 3623.