The diffusion coefficient of zinc in NaCl crystals

Measurements of the temperature and concentration dependence of the diffusion coefficient of divalent zinc were made to explain the mechanism of the process and to check the current theoretical conception. The measurements were executed on pure NaCl crystals. A knee in the curve of the logarithm of the diffusion coefficient versus the inverse temperature shows the diffusion is connected to two processes of different activation energy in accordance with the theoretical conception. The theoretically expected concentration dependence, however, has not been found, nor does the knee correspond to the expectations.