The diffusion of Li at 300C was studied in samples in which the native defect concentration was fixed by prior heat-treatment in Cd or Te vapour. It was found that, at low temperatures, the Li diffused in 2 forms which were characterized by 2 different diffusion mechanisms. The rapid diffusion was suggested to involve interstitial Li, while the slow diffusion involved the interaction with Cd vacancies; probably in a non-simple configuration. Following  the Cd treatment, the fast Li diffusivity was 1 x 10-10cm2/s and the slow diffusivity was 2 x 10-14cm2/s. After the Te treatment, the corresponding diffusivities were 5 x 10-10cm2/s and 1.5 x 10-11cm2/s.

L.Svob, C.Grattepain: Journal of Solid State Chemistry, 1977, 20[3], 297-303