Electron diffraction study of the sillenites Bi12SiO 20, Bi25FeO39 and Bi25InO 39: Evidence of short-range ordering of oxygen-vacancies in the trivalent sillenites
Document Type
Article
Publication Date
1-1-2014
Abstract
We present an electron diffraction study of three sillenites, Bi 12SiO20, Bi25FeO39, and Bi 25InO39 synthesized using the solid-state method. We explore a hypothesis, inspired by optical studies in the literature, that suggests that trivalent sillenites have additional disorder not present in the tetravalent compounds. Electron diffraction patterns of Bi25FeO 39 and Bi25InO39 show streaks that confirm deviations from the ideal sillenite structure. Multi-slice simulations of electron-diffraction patterns are presented for different perturbations to the sillenite structure - partial substitution of the M site by Bi3+, random and ordered oxygen-vacancies, and a frozen-phonon model. Although comparison of experimental data to simulations cannot be conclusive, we consider the streaks as evidence of short-range ordered oxygen-vacancies. © Author(s) 2014.
Publication Title
AIP Advances
Volume
4
Issue
8
Digital Object Identifier (DOI)
10.1063/1.4893341
E-ISSN
21583226
Citation Information
Scurti, Arenas, D. J., Auvray, N., Laboratoire de Nanotechnologie et d’Instrumentation Optique - UMR CNRS 6279, U. T. de T., Lufaso, M. W., Takeda, S., & Kohno, H. (2014). Electron diffraction study of the sillenites Bi{sub 12}SiO{sub 20}, Bi{sub 25}FeO{sub 39} and Bi{sub 25}InO{sub 39}: Evidence of short-range ordering of oxygen-vacancies in the trivalent sillenites. AIP Advances, 4(8). https://doi.org/10.1063/1.4893341