Dynamic Atomic Displacements and Athermal Dislocation Glide in Crystals
| Autor: | Yu. A. Khon, Helena Zapolsky |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Condensed matter physics Solid-state physics Condensed Matter Physics 01 natural sciences Instability Displacement (vector) Electronic Optical and Magnetic Materials Vibration Crystal Condensed Matter::Materials Science 0103 physical sciences Physics::Atomic and Molecular Clusters Physics::Atomic Physics Dislocation 010306 general physics |
| Zdroj: | Physics of the Solid State. 62:587-591 |
| ISSN: | 1090-6460 1063-7834 |
| Popis: | A dislocation glide mechanism at low temperatures is proposed. The mechanism is based on the inclusion of dynamic atomic displacements, i.e., those caused by nonadiabatic transitions of atoms in a crystal with a dislocation under action of an external force. The dynamic displacements initiate the instability of a rectilinear dislocation with respect to low-amplitude displacements during atomic vibrations. The instability development leads to the formation of a double kink and the dislocation displacement by one interatomic distance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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