Universal Symmetry Property of Point Defects in Crystals
- 31 July 2000
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 85 (5), 1016-1019
- https://doi.org/10.1103/physrevlett.85.1016
Abstract
Point defects (vacancies, solute atoms, and disorder) are ubiquitous in crystalline solids. With in situ transmission electron microscopy we find clear evidence for the existence of a universal symmetry property of point defects; i.e., the symmetry of short-range order of point defects follows the crystal symmetry when in equilibrium. We further show that this symmetry-conforming property can lead to various interesting effects including “aging-induced microstructure memory” and the associated “time-dependent two-way shape memory.”Keywords
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