The bulk diffusion of Ga in single crystals was studied at 827 to 1189K by using secondary ion mass spectrometry. The diffusion coefficients ranged from 9.6 x 10-19 to 1.5 x 10-12cm2/s. The results (table 36) could be expressed as:

D (cm2/s) = 1.4 x 102 exp[-76.1(kcal/mol)/RT]

The secondary ion mass spectrometry data also revealed an isotope effect whose mean value was equal to 0.24. This value was nearly equal to, or slightly lower than, the isotope effect for self-diffusion in Ge.

U.Södervall, H.Odelius, A.Lodding, U.Roll, B.Predel, W.Gust, P.Dorner: Philosophical Magazine A, 1986, 54[4], 539-51