@article{oai:kutarr.kochi-tech.ac.jp:00000266,
 author = {Scurti, Craig A. and Auvray, Nicolas and Lufaso, Michael W. and Takeda, Seiji and Kohno, Hideo and Arenas, D. J.},
 issue = {8},
 journal = {AIP Advances},
 month = {Aug},
 note = {We present an electron diffraction study of three sillenites, Bi_<12>SiO_<20>, Bi_<25>FeO_<39>, and Bi_<25>InO_<39> 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 Bi_<25>FeO_<39> and Bi_<25>InO_<39> 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 Bi^<3+>, 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.},
 pages = {087125-1--087125-10},
 title = {Electron diffraction study of the sillenites Bi_<12>SiO_<20>, Bi_<25>FeO_<39> and Bi_<25>InO_<39> : Evidence of short-range ordering of oxygen-vacancies in the trivalent sillenites},
 volume = {4},
 year = {2014}
}