The diffusion coefficients were measured at 489 to 774K, after 16O was introduced via ion implantation. The diffusion penetration profiles were measured by exploiting the 16O(d,p)17*O nuclear reaction. The O diffusivity was described by:

D(cm2/s) = 1.3 x 10-2exp[-29.0(kcal/mol)/RT]

H.Nakajima, S.Nagata, H.Matsui, S.Yamaguchi: Philosophical Magazine A, 1993, 67[3], 557-71