Temperature dependence of the lattice parameter and the coefficient of thermal expansion of CsCdF 3

Abstract

A 19 cm Unicam high temperature powder camera was used with Cu Kα radiation to collect high temperature lattice parameter data in the temperature range 28–450°C. The coefficient of thermal expansion at various temperatures was evaluated from these data using Cohen's least-squares method. Both the lattice parameter and the coefficient of thermal expansion increased with increasing temperature. The mean value of the coefficient of expansion of CsCdF 3 over the temperature range investigated was 15.29 × 10 −6° C −1.