The high-temperature behavior of a  = 25 (710) symmetrical tilt grain boundary was investigated by means of molecular dynamics simulations. It was found that the core structure first oscillated between several variants, and rapidly disordered to pipe diffusion. In addition, a low-energy incompletely tetrahedrally-coordinated structure was found which had electronic states in the gap.

O.B.M.H.Duparc, M.Torrent: Materials Science Forum, 1996, 207-209, 221-4