Temperature dependence of the elastic constants of kcl

Abstract

Adiabatic elastic constants C 11, C 12, and C 44 have been evaluated for crystalline KCl using a realistic potential of the A R −9 + B R −6 ± C R −1 form and normal mode frequencies obtained from local dynamics of two particles allowed to oscillate in a static potential field due to all the rest of the particles assumed at rest in their mean positions. Temperature dependence of these principal elastic constants is examined in comparison with the available experimental data.