Tracer diffusion results for 64Cu showed that the halide exhibited self-diffusivities which were of the order of 3 x 10-5 to 4 x 10-5cm2/s; with an activation energy of the order of 0.3eV for -CuI. A structural factor was involved. An estimation of the diffusivity, which used a jump model in combination with published phonon frequencies, revealed a significant departure from tracer diffusion in the -phase and in the -phase. In the case of -CuI, the model agreed reasonably well with tracer results.

Self Diffusion Study of Copper Halides using Tracer Methods. J.X.M.Z.Johansson, K.Sköld, J.E.Jørgensen: Solid State Ionics, 1994, 70/71, 522-7