Coefficients of Cu+ diffusion in the , , and  phases (table 13) were measured by using an in situ tracer technique. It was found that diffusion in the  and  phases obeyed an Arrhenius law within the measured temperature ranges, and the activation energies were estimated to be 1.21 and 0.324eV, respectively. A comparison of the diffusion coefficients which were measured by using the in situ tracer diffusion technique, with diffusion coefficients which were deduced from conductivity data, suggested that a non charge-carrying diffusion mechanism was operating in copper halides.

Tracer-Diffusion Study of Cu+ Diffusion in CuBr. J.E.Jørgensen, J.X.M.Z.Johansson, K.Sköld: Physical Review B, 1995, 52[2], 1004-8

Figure 5

Diffusion of Au Crystallites on the (100) Planes of KBr