Journal Article

PUBDB-2019-04977

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Stoichiometric deviations in bond distances in the mixed $As_{2}S_{3}-As_{2}Se_{3}$ system: Raman spectroscopy and EXAFS studies

Stronski, A. ; Kavetskyy, T.Extern* ; Revutska, L. ; Kaban, I.Extern* ; Shportko, K. ; Baran, J. ; Trzebiatowska, M.

2019
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.jnoncrysol.2019.119533

Abstract: 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

Note: © Elsevier B.V.; Full published version in progress; Post referee fulltext in progress; Embargo 12 months from publication

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

Experiment(s):

1. DORIS Beamline X1 (DORIS III)

Appears in the scientific report 2019

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; No Fulltext ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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