The variational method was used to calculate the atomic binding energy and the surface relaxation of the (001) and (111) Ni vicinal faces cut at a 10° angle to the [0¯11] axis. The one- and two-atom step crystal surfaces in ferro- and paramagnetic states were studied for which a difference in the atomic binding energies of the upper layers and a curvature of the <110> close-packed chains of atoms emerging on the crystal surface were obtained. A possible change of the Wehner spot pattern for smooth and step-like surfaces in the ferro- and paramagnetic states was estimated.

Computer Simulation of Surface Reconstruction and Relaxation of Ni Single Crystal Faces in Ferro- and Paramagnetic States. A.S.Mosunov, O.P.Ivanenko, M.V.Kuvakin, V.E.Yurasova: Vacuum, 1992, 43[8], 785-9