Journal
PHYSICAL REVIEW LETTERS
Volume 85, Issue 5, Pages 1016-1019Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.85.1016
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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.
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