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Free keywords:
Absolute structure, Chirality, electron backscatter diffraction, Kikuchi diffraction, Non-centrosymmetric crystals, Scanning electron microscopy, Chirality, Crystal structure, Manganese, Selenium, Stereochemistry, Tellurium, Tellurium compounds, Absolute structure, Chirality assignment, Crystallographic analysis, Crystals structures, Electron back scatter diffraction, Electron backscatter diffraction, Kikuchi diffraction, Non-centrosymmetric crystals, Property, Scanning electrons, Scanning electron microscopy
Abstract:
Crystals of the chemical elements manganese, tellurium, and selenium can show the effects of handedness. In order to sense the possible effects of a changing sense of chirality on the properties of samples from these elements, the potential presence of two, enantiomorphic, physically different, variants of these elemental crystal structures needs to be resolved in crystallographic analyses. In the present paper, we show that dynamical Kikuchi diffraction in the scanning electron microscope is sensitive to the local sense of chirality in crystals of single chemical elements. We demonstrate chirality assignment in β‑manganese, and we determine the sense of crystal chirality from Kikuchi diffraction patterns of the trigonal structures of tellurium and selenium. © 2023 Elsevier Inc.
