It was found that the data, at 750 to 900C, in the case of 110Ag in samples which contained 2vol% of alumina could be described by:

D (cm2/s) = 2.95 x 100 exp[-45.0(kcal/mol)/RT]

Y.Imai, T.Miyazaki: Science Reports of the Research Institute of Tohoku University - A, 1966, 18, 59-64