A modified electrostatic model was applied to the small number of available data on impurity diffusion in this metal. A value of 0.65 was assumed for the effective charge on the Co ion, and the temperature dependences of the diffusion coefficients were calculated for sp and 3d impurities.

Application of the Modified Electrostatic Model to Impurity Diffusion in Cobalt. G.Neumann, V.Tolle, C.Tuijn: Physica B, 2001, 304[1-4], 298-303