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Multiple origins of extra electron diffractions in fcc metals

Authors :
Walsh, Flynn
Zhang, Mingwei
Ritchie, Robert O.
Asta, Mark
Minor, Andrew M.
Publication Year :
2023

Abstract

Diffuse intensities in the electron diffraction patterns of concentrated face-centered cubic solid solutions have been widely attributed to chemical short-range order, although this connection has been recently questioned. This article explores the many non-ordering origins of commonly reported features using a combination of experimental electron microscopy and multislice diffraction simulations, which suggest that diffuse intensities largely represent thermal and static displacement scattering. A limited number of observations may reflect additional contributions from planar defects, surface terminations incommensurate with bulk periodicity, or weaker dynamical effects<br />Comment: 8 pages, 3 figures

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.2311.10326
Document Type :
Working Paper