Using the radioactive isotope, 114In, diffusion along dislocations was studied. It was found that the results at between 900 and 1200C could be described by:

D(cm2/s) = 1 x 103exp[-3.20(eV)/kT]

V.A.Sterkhov, V.A.Panteleev, P.V.Pavlov: Fizika Tverdogo Tela, 1967, 9[2], 681-3