• Priyanka Tripathi
• Pooja Bhambhani
• Dr S K Shrivastava
• Dr S K Verma
• Dr Kailash

Elastic constant of solid can be used to illustrate the linear and non-linear mechanical and dynamical behaviour of crystals which provide the crucial information about the nature of longand short-range potentials. In this paper, we have discussed the Ultrasonic properties of ionic crystals such as NaCl, NaBr, NaI, NaF. These elastic constants are estimate using Coulomb and Börn-Mayer type interaction potential with two primary physical parameters ie. nearest neighbour distance and hardness parameter at elevated temperatures. Later on, ultrasonic velocity and various ultrasonic physical quantities ie. average Grüneisen number, specific heat, phonon-velocity, thermal relaxation point, non-linear properties are calculated at different temperatures. The outcomes hence got are contrasted with experimental data and found in well concurrence with current data.

"Ultrasonic Properties of Sodium Halides Crystals", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.558-572, May-2019, Available :http://www.jetir.org/papers/JETIR1905W35.pdf

"Ultrasonic Properties of Sodium Halides Crystals", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp558-572, May-2019, Available at : http://www.jetir.org/papers/JETIR1905W35.pdf