Abstract
In the present paper a three-body potential model (TBPM) has been employed for the analysis of dielectric behaviour of NaCl-NaBr and and KCl-KBr mixed crystals with varying compositions. The physical properties like dielectric constants (ɛ0 andɛ∞), optic mode frequencies (ΩOLO andΩTO), effective charge parameter (es*), optic mode Gruneisen parameters and strain derivatives ofɛ0 andɛ∞ dielectric constants have been calculated. The results achieved in the present study are found in fairly good agreement with the available experimental data. The results obtained by previous investigators are also shown for the sake of comparison.
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