Tracer studies indicated that the diffusion of 71Ge at 1100 to 1265C, for Ge concentrations which were below the level at which new dislocations were introduced, was given by:

D (cm2/s) = 6.2 x 104 exp[-5.17(eV)/kT]

P.V.Pavlov, V.I.Pashkov, E.V.Dobrokhotov: Fizika Tverdogo Tela, 1973, 15[11], 3396-8