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@ARTICLE{Jovari:599924,
author = {Jovari, Pal and Chrissanthopoulos, A. and Andrikopoulos, K.
S. and Pethes, I. and Kaban, I. and Kohara, S. and Beuneu,
B. and Yannopoulos, S. N.},
title = {{S}hort range order of glassy {KS}b$_5${S}$_8$ by
diffraction, {EXAFS}, vibrational spectroscopy and {DFT}
calculations},
journal = {Journal of non-crystalline solids},
volume = {616},
issn = {0022-3093},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {PUBDB-2023-07613},
pages = {122461},
year = {2023},
abstract = {We report on a detailed experimental and simulation study
of the short- and medium-range order of a potential phase
change material – glassy KSb$_5$S$_8$. On the experimental
side, diffraction techniques and EXAFS have been employed to
record accurate structural data. Structural models have been
generated by fitting multiple datasets simultaneously with
the reverse Monte Carlo simulation technique. In addition,
density functional theory was employed to study the
structure and vibrational modes of selected clusters,
representative of the glass structure. Unconstrained RMC
simulation runs revealed that the average Sb-S coordination
number is 3.18 ± 0.2, thus Sb is mostly threefold
coordinated in the glassy state. The fraction of edge and
corner sharing SbSn polyhedra and distribution of bridging S
atoms (Q$^n$ distribution) have also been obtained.
Distribution of bridging S atoms around Sb is similar in the
crystalline and glassy states. DFT calculations assisted in
the identification of a Raman mode at ∼468 cm$< {−1}$,
assigned to hypervalent bonding (quasi-tetrahedral units) in
the glass structure.},
cin = {DOOR ; HAS-User},
ddc = {670},
cid = {I:(DE-H253)HAS-User-20120731},
pnm = {899 - ohne Topic (POF4-899)},
pid = {G:(DE-HGF)POF4-899},
experiment = {EXP:(DE-H253)D-BW5-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001030652500001},
doi = {10.1016/j.jnoncrysol.2023.122461},
url = {https://bib-pubdb1.desy.de/record/599924},
}