The direct observation of anti-phase domain boundaries in ordered copper-gold (CuAu) alloy
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摘要: The periodic arrangement of anti-phase domain boundaries in the ordered alloy CuAu II has been determined by direct resolution domains electron microscope. High contrast image is obtained using dark-field technique with tilted illumination so as to maintain a better than 20 angstrom. consists series closed loops, which are arranged such way that there zones regularly spaced period In addition, some antiphase terminate within specimen. This correlated effect dislocations on formation boundaries. transmission diffraction pattern from films analyzed detail. interpretation given earlier workers shown be inadequate, and an alternative based upon occurrence secondary put forward. relevance this mechanism microscope discussed.
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