Concentration Dependence of Ultrasonic Attenuation in NaCl-NaCN Mixed Crystal System

The paper presents theoretical temperature dependent mechanical and thermophysical properties of mixed crystal system using ultrasonic analysis. The Coulomb and Born-Mayer potential was applied to evaluate the second and third order elastic constants of the material at the temperature range 100-500 K. The second order elastic constants are used to compute mechanical properties such as bulk modulus, shear modulus and Debye average velocity. Ultrasonic attenuation due to phonon-phonon interaction for longitudinal and shear wave and thermoelastic loss have been evaluated at these temperatures along <111> direction. The obtained results are discussed in correlation with available results on these properties for the chosen material.