Abstract
Abstract Measurements of self-diffusion in solution-grown single crystals of CsCl have been made over the temperature range 200–460°c. Comparison with electrical conductivity measurements indicates that the conductivity is essentially ionic and that the anion defects are the more mobile. Schottky defects seem to be the predominant type of point defects and their formation enthalpy is l·86 ev. Activation enthalpies for vacancy mobility are estimated to be 0·6 ev and 0·34 ev for the cation and anion vacancies respectively. The diffusion cannot be completely accounted for in terms of single vacancy movement and it is suggested that there is some contribution from vacancy pairs.
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