The diffusion of Ga in single crystals was investigated, at 827 to 1189K, by means of secondary ion mass spectrometry. The results (table 13) could be described by:

D (m2/s) = 1.4 x 10-2 exp[-319.5(kJ/mol)/RT]

Gallium Tracer Diffusion and Its Isotope Effect in Germanium. U.Södervall, H.Odelius, A.Lodding, U.Roll, B.Predel, W.Gust, P.Dorner: Philosophical Magazine A, 1986, 54[4], 539-51