The impurity diffusion of 54Mn in CoO was measured in air by using the tracer-sectioning technique. The results, at 1001 to 1549C, could be described by:

D (cm2/s) = 2.15 x 10-3 exp[-36.09(kcal/mol)]

Cation Impurity Diffusion in CoO and NiO. K.Hoshino, N.L.Peterson: Journal of Physics and Chemistry of Solids, 1984, 45[8-9], 963-72