The interaction between misfit dislocations at the metal/MgO interfaces: Atomistic study and analysis

• Published in: Physica. B, Condensed matter Vol. 407; no. 5; pp. 873 - 878
• Main Authors: Long, Y., Chen, N.X.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 01.03.2012; Elsevier
• Subjects: Composition; defects and impurities; Condensed matter; Condensed matter: structure, mechanical and thermal properties; Defects; Dislocation mass; Dislocation wave; Dislocations; Dislocation–dislocation interaction; Dynamics; Exact sciences and technology; Magnesium oxide; Mathematical models; Metal/MgO interface; Molecular structure; Networks; Physics; Solid surfaces and solid-solid interfaces; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); Metal/MgO interface; Dislocation wave; Dislocation mass; Dislocation–dislocation interaction; Dislocation interactions; Misfit dislocations; Line defects; Metals; Magnesium oxide; Solid-solid interfaces; Equations of motion; Atomistic model; Dislocation-dislocation interaction; Wave functions
• ISSN: 0921-4526; 1873-2135
• DOI: 10.1016/j.physb.2011.12.105

Misfit dislocation is one of the most important linear defects at the interface. Its structure and mechanics have attracted much attention. However, the dislocation dynamics for some interfaces are not very clear. We study the dislocation–dislocation interaction at the metal/MgO interfaces. The interaction is proved to be repulsive, and is obtained by molecular mechanics. The dislocation mass and dislocation wave are investigated, for which the dislocation wave speed is calculated by using the dislocation network model. A set of interesting results is obtained.