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Acoustic, elastic and acoustooptic properties of Tl3AsSe3 crystals: acoustic isotropic point
Ukrainian Journal of Physical Optics
We have experimentally studied acoustic wave (AW) velocities in Tl 3 AsSe 3 crystals. Basing on these results, the matrices of elastic stiffness and compliance coefficients are obtained and the cross sections of the AW velocity surfaces by the principal crystallographic planes are constructed. We have revealed a phenomenon termed as an acoustic isotropic point. We have found that, at the room temperature and the AW frequency equal to 10 MHz, the Tl 3 AsSe 3 crystals are close to the conditionsdoi:10.3116/16091833/16/4/178/2015 fatcat:ff3vft7i5jawvi3zw3i5d5gnme