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Direct observation of incommensurate structure in Mo3Si

Direct observation of incommensurate structure in Mo3Si Z‐contrast imaging, electron diffraction, atom‐probe tomography (APT) and density functional theory calculations were used to study the crystal structure of the Mo3Si phase which was previously reported to have an A15 crystal structure. The results showed that Mo3Si has an incommensurate crystal structure with a non‐cubic unit cell. The small off‐stoichiometry in composition of the sample which was revealed by APT and atomic resolution Z‐contrast imaging suggested that site substitution caused the development of split atomic positions, disorder and vacancies. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Crystallographica Section A Foundations of Crystallography Wiley

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References (54)

Publisher
Wiley
Copyright
Copyright © 2016 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0108-7673
eISSN
1600-5724
DOI
10.1107/S2053273316012286
pmid
27809205
Publisher site
See Article on Publisher Site

Abstract

Z‐contrast imaging, electron diffraction, atom‐probe tomography (APT) and density functional theory calculations were used to study the crystal structure of the Mo3Si phase which was previously reported to have an A15 crystal structure. The results showed that Mo3Si has an incommensurate crystal structure with a non‐cubic unit cell. The small off‐stoichiometry in composition of the sample which was revealed by APT and atomic resolution Z‐contrast imaging suggested that site substitution caused the development of split atomic positions, disorder and vacancies.

Journal

Acta Crystallographica Section A Foundations of CrystallographyWiley

Published: Nov 1, 2016

Keywords: ; ; ; ;

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