Self-Diffusion of Chloride Ions in Manganese Bichloride Crystallites

Abstract

Abstract The self-diffusion of chloride ions in the powdery crystals of manganese dichloride was studied in the temperature range of 200–420°C by the use of the isotopic-exchange method. The activation energies for self-diffusion were determined to be 0.95 and 1.6eV in a lower and a higher temperature region respectively. From these, the activation energy for the migration of chloride ions and the formation energy of an anion vacancy or a pair of an anion and a cation vacancy were deduced.