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Electron Microscopy Study of the “Direct Resolution” of Periodic Antiphase Boundaries, with Special Reference to Ag 3 Mg
Author(s) -
Vanderschaeve G.
Publication year - 1971
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220460133
Subject(s) - superlattice , electron microscope , alloy , resolution (logic) , electron diffraction , diffraction , condensed matter physics , optics , electron , interference (communication) , materials science , crystallography , physics , chemistry , quantum mechanics , composite material , computer science , computer network , channel (broadcasting) , artificial intelligence
In a long period ordered alloy, interference between superlattice and satellite beams allows to obtain fringe systems, the characteristics of which are analysed within the two beam kinematical theory of electron diffraction. Expressions for the intensity are given in the different cases and fit with electron microscopy observations performed on an Ag 3 Mg alloy of 22 at% Mg composition. These observations show conclusively that antiphase boundaries occur regularly on every second (100) plane for such a concentration.