Intercrystalline diffusion, dynamical and magnetic properties of grain boundaries

Using the method, developed by the authors, which, combines diffusion over grain boundaries and nuclear gamma-resonance spectroscopy, electron, dynamic, magnetic, diffusion properties of impurity states of atomic probes (57Fe) in the nucleus of grain boundary (GB) of metallic polycrystals and in the regions of neighbour crystallite adjacent to GB, have been investigated. It is shown that for a wide number of metals the atomic probes in the nucleus of wide-angle GB polycrystals occupy the only state, which differs significantly as to its properties from the states in the interstitials of the metal regular lattice