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Structure, energy, and periodic potential of kinks in screw dislocations for B.C.C. lattices
Author(s) -
Hartmann O.,
Pegel B.
Publication year - 1970
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19700420133
Subject(s) - dislocation , amplitude , lattice (music) , condensed matter physics , position (finance) , physics , range (aeronautics) , lattice constant , plane (geometry) , energy (signal processing) , total energy , atomic physics , materials science , quantum mechanics , geometry , diffraction , mathematics , psychology , displacement (psychology) , finance , acoustics , economics , composite material , psychotherapist
The widths, energies, and periodic potentials of kinks in undissociated screw dislocations are numerically computed within a modified Dietze and Leibfried model. The kinks considered are assumed to lie in a {110} plane. Results are presented for Nb, Mo, and Fe. The kink widths range between 0.8 and 2.6 lattice constants while the amplitudes of the periodic potential felt by the kink when moving along the dislocation are found to be 6, 15, and 2 meV for Nb, Mo, and Fe, respectively. The kinks are short and the kink widths differ, depending on the kink position, by about 100%. The kink energies range between 0.5 and 4 eV.