The migration of In was studied, at 200 to 850C, by using radiotracer techniques. It was found that the diffusivity was independent of the In concentration. At temperatures below 400C, it was also essentially independent of temperature. At higher temperatures, the diffusivity was a function of both the temperature and the degree of stoichiometry. When the specimen was Te-saturated, the diffusivity could be described by:

D (cm2/s) = 6.48 x 10-4 exp[-1.15(eV)/kT]

When the specimen was Cd-saturated, the diffusivity could be described by:

D (cm2/s) = 1.17 x 102 exp[-2.21(eV)/kT]

E.Watson, D.Shaw: Journal of Physics C, 1983, 16[3], 515-37

The best linear fits to the solute diffusion data ([26] to [45]) yield:

Cu: Ln[Do] = 0.21E – 14.3 (R2 = 0.06); Hg: Ln[Do] = E – 38.8 (R2 = 0.98);

In: Ln[Do] = 0.40E – 16.9 (R2 = 0.91); Na: Ln[Do] = 0.67E – 18.1 (R2 = 0.99)