https://doi.org/10.1140/epjb/e2007-00072-0
The two-dimensional Peierls-Nabarro model for interfacial misfit dislocation networks of cubic lattice
1
Department of Physics, Beijing Normal University, Beijing, 100875, P.R. China
2
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100080, P.R. China
Corresponding author: a ygyao@aphy.iphy.ac.cn
Received:
4
August
2006
Revised:
15
January
2007
Published online:
14
March
2007
A model is developed to investigate the two-dimensional interfacial misfit dislocation networks that follows the original Peierls-Nabarro idea. Structure and energies of heterophase interfaces are considered for the cubic lattice. To examine the energy contribution of misfit dislocations, where interactions between two dislocation arrays are concerned, a generalized stacking fault energy is proposed. Combined with first-principles calculations, we apply this model to a practical metal-ceramic example: the Ag/MgO(100) interface. An important correction to the adhesive energy is proposed in addition to its dislocation structure being confirmed.
PACS: 68.35.-p – Solid surfaces and solid-solid interfaces: Structure and energetics / 61.72.Bb – Theories and models of crystal defects / 61.72.Lk – Linear defects: dislocations, disclinations
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2007
