By using the serial sectioning technique, a study was made of the diffusion of 90Sr ions in high-purity single crystals. It was found that the data, at 500 to 730C, could be described by:

D (cm2/s) = 7.6 x 10-3 exp[-1.25(eV)/kT]

F.Bénière, M.Bénière, M.Chemla: Comptes Rendus de l’Academie des Sciences – C, 1969, 268[17], 1461-4

The best linear fits to the solute diffusion data ([382] to [383], [391] to [397], [403] to [405]) yield:

Cs: Ln[Do] = 0.29E – 9.9 (R2 = 0.73); Na: Ln[Do] = 0.57E – 22.4 (R2 = 0.99);

Sr: Ln[Do] = 0.55E – 20.5 (R2 = 0.51)