The energies of Ag (001) and (110) twist grain boundary in translation were calculated by using the modified analytical embedded atom method. The energy period corresponded exactly to the DSC lattice unit cell and the area of the energy period referred to the coincidence site lattice unit cell was 1/Σ2. The so-called energy grooves were parallel to the sides of the coincidence site lattice or DSC lattice unit cell. The most preferred sliding direction was parallel to identical sides of the square coincidence site lattice unit cell for (001) boundaries and to the short side of the rectangular coincidence site lattice unit cell for (110) boundaries. From energy minimization considerations, the stable configuration appeared when two adjacent grains were translated relatively to the corners, center or side-midpoint of the DSC lattice unit cell.

The Periodicity in Translation of Ag (001) and (110) Twist Grain Boundary. X.M.Wei, J.M.Zhang, K.W.Xu: Applied Surface Science, 2007, 253[9], 4307-10