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@ARTICLE{Herrmann:852521,
author = {Herrmann, Markus and Stoffel, R. P. and Dronskowski, R. and
Friese, K.},
title = {{T}he low-temperature heat capacity of the {S}b 2 {T}e 3−
x {S}e x solid solution from experiment and theory},
journal = {Journal of physics / Condensed matter},
volume = {30},
number = {40},
issn = {1361-648X},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2018-05449},
pages = {405702 -},
year = {2018},
abstract = {The lattice dynamics of Sb2Te3−x Se x (x = 0,
0.6, 1.2, 1.8, 3) mixed crystals have been studied by a
combination of low-temperature heat-capacity measurements
between 2–300 K and first-principles calculations. The
results from the experimental and theoretical investigations
are in excellent agreement. While Sb2Se3 can be considered
as a harmonic lattice oscillator in this temperature range,
for the isostructural compounds Sb2Te3, Sb2Se0.6Te2.4,
Sb2Se1.2Te1.8 and Sb2Se1.8Te1.2 (tetradymite structure type;
R m) a small anharmonic contribution to the total heat
capacity has to be taken into account at temperatures above
250 K. For the compounds which crystallize in the
tetradymite structure type the experimental and theoretical
data show unambiguously that the exchange of Te by Se leads
to an increase of the bonding polarity and consequently to a
hardening of the bonding which is reflected in an increase
of the Debye temperatures with increasing Se contents. In
addition, our studies clearly demonstrate that the mixed
crystals in the stability field of the tetradymite structure
type are characterized by a strong non-ideal mixing
behavior.},
cin = {JCNS-2 / PGI-4 / JARA-FIT},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
$I:(DE-82)080009_20140620$},
pnm = {144 - Controlling Collective States (POF3-144) / 524 -
Controlling Collective States (POF3-524) / 6212 - Quantum
Condensed Matter: Magnetism, Superconductivity (POF3-621) /
6213 - Materials and Processes for Energy and Transport
Technologies (POF3-621) / 6G4 - Jülich Centre for Neutron
Research (JCNS) (POF3-623)},
pid = {G:(DE-HGF)POF3-144 / G:(DE-HGF)POF3-524 /
G:(DE-HGF)POF3-6212 / G:(DE-HGF)POF3-6213 /
G:(DE-HGF)POF3-6G4},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30168444},
UT = {WOS:000444977000002},
doi = {10.1088/1361-648X/aade0e},
url = {https://juser.fz-juelich.de/record/852521},
}