%0 Journal Article
%A Stronski, A.
%A Kavetskyy, T.
%A Revutska, L.
%A Kaban, I.
%A Shportko, K.
%A Baran, J.
%A Trzebiatowska, M.
%T Stoichiometric deviations in bond distances in the mixed As<sub>2</sub>S<sub>3</sub>−As<sub>2</sub>Se<sub>3</sub> system: Raman spectroscopy and EXAFS studies
%J Journal of non-crystalline solids
%V 521
%@ 0022-3093
%C Amsterdam [u.a.]
%I Elsevier Science
%M PUBDB-2019-04977
%P 119533 (6 pages)
%D 2019
%Z © Elsevier B.V.; Full published version in progress; Post referee fulltext in progress; Embargo 12 months from publication
%X Raman spectroscopy and extended X-ray absorption fine structure (EXAFS) spectroscopy have been applied to find evidence for isostructural substitution of chalcogen atoms in pyramidal structural units of network glasses from stoichiometric/pseudo-binary As2S3-As2Se3 system. The obtained values of the nearest neighbours atomic distance (rAs-Se = 2.37 ± 0.01 Å; rAs-S = 2.33 ± 0.01 Å for As40Se30S30) suggest the existence of mixed AsS2Se and AsSe2S pyramids in which each of As atoms is bonded with S and/or Se atoms in relation to S/Se ratio in composition, while Se atoms are bonded only with As ones with the same bond distance in the form of = As-Se-As = bridges that connect the main pyramidal structural units. No evidence for existence of heteroatomic or heteronuclear SeS bonding is found for the examined glasses
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000484644700056
%R 10.1016/j.jnoncrysol.2019.119533
%U https://bib-pubdb1.desy.de/record/429371