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Study of Second and Third-Order Elastic Constants and Pressure Derivatives of Second Order Elastic Constants of Halides

Ajay Kumar Upadhyay, R.K. Sharma, B.S. Sharma

Abstract


The Second and third order elastic constants of some halides viz LiCl, LiI, NaCl, KCl, RbCl, CsCl, and CsBr have been studied [1]. The isothermal bulk modulus KT, the volume thermal expansion coefficient β and short range force parameter required for this computation are calculated and presented in Tables 1 & 2. Also the pressure derivatives of SOEC are obtained using the three body force model [2-5]. The result shows that all the constants decrease with increase in molecular weight and lattice constants with a particular group. It can be seen from results the calculated values of TOEC shows good accord with the experimental values of these type solids.

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DOI: https://doi.org/10.37628/ijssm.v3i2.31

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