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.Mo3Si with a small off-stoichiometry in composition has an incommensurate crystal structure with a non-cubic unit cell. Atom-probe tomography and atomic resolution Z-contrast imaging suggest that site substitution causes the development of split atomic positions, disorder and vacancies.
Original language | English (US) |
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Pages (from-to) | 660-666 |
Number of pages | 7 |
Journal | Acta Crystallographica Section A: Foundations and Advances |
Volume | 72 |
Issue number | 6 |
DOIs | |
State | Published - Nov 1 2016 |
Keywords
- MoSi
- atom-probe tomography
- electron diffraction
- incommensurate structure
- transmission electron microscopy
ASJC Scopus subject areas
- Structural Biology
- Biochemistry
- Materials Science(all)
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Inorganic Chemistry