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Kikuchi pattern analysis of noncentrosymmetric crystals
Author(s) -
Nolze G.,
Grosse C.,
Winkelmann A.
Publication year - 2015
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s1600576715014016
Subject(s) - electron backscatter diffraction , kikuchi line , polar , condensed matter physics , lattice (music) , asymmetry , materials science , diffraction , electron diffraction , semiconductor , crystallography , optics , physics , chemistry , reflection high energy electron diffraction , optoelectronics , quantum mechanics , astronomy , acoustics
Different models of Kikuchi pattern formation are compared with respect to their applicability to noncentrosymmetric crystals, and the breakdown of Friedel's rule in experimental electron backscatter diffraction (EBSD) patterns is discussed. Different A III B V semiconductor materials are used to evaluate the resulting asymmetry of Kikuchi band profiles for polar lattice planes. By comparison with the characteristic etch pit morphology on a single‐crystal surface, the polar character of the measured lattice planes can be assigned absolutely. The presented approach enables point‐group‐resolved orientation mapping, which goes beyond the commonly applied Laue group analysis in EBSD.