Fig. 3
Changes of equivalent positions of a nickel atom in subnanocluster at different positions of a carbon atom. Changes of nickel atom equivalent positions in subnanocluster at different positions of carbon atom, which were assessed by Δ1, Δ2 and Δ3 criteria in cases carbon atom was located: a in the central octahedral interstitial site, b at the maximum of the potential barrier and c on the surface