Ultrasonic Attenuation in Dielectric Crystals
S.K. Kor and R.K. Singh
Department of Physics, University of Allahabad, Allahabad - 211 002, India
Received: August 27, 1991
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Ultrasonic attenuation and non-linearity parameters have been evaluated for dielectric crystals RbCl, RbBr and RbI in a wide temperature range. Basic physical parameters, nearest neighbour distance and hardness parameters of the substance and Coulomb and Born-Mayer potentials have been used to obtain ultrasonic attenuation due to phonon-viscosity mechanism along (100) direction of propagation for longitudinal and shear waves. Results are as expected and it has been concluded that ultrasonic attenuation is a fundamental property of the substance.
DOI: 10.12693/APhysPolA.80.805
PACS numbers: 62.20.Dc, 62.65.+K