INTERSTITIALCY MOTION IN SILVER HALIDES

Results are reported for the diffusion of Ag in single crystals of AgCl between 300 and 435°C. Diffusion coefficients are measured with radioactive tracers by the sectioning method. The correlation factor {cauchy integral}ag is obtained by comparison to the ionic conductivity with the Einstein relation. An analysis of {cauchy integral}ag shows that the interstitial silver ion moves by a combination of two kinds of interstitialcy jumps, with an activation energy of 0.008 eV for the collinear jump and 0.13 eV for the non-collinear jump. Earlier diffusion measurements for AgBr are also re-analyzed with more recent correlation factors and mobility data to give revised activation energies of 0.058 eV and 0.27 eV, respectively. © 1969.