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@ARTICLE{Herrmann:863705,
author = {Herrmann, Markus Guido and Stoffel, Ralf Peter and Küpers,
Michael and Ait Haddouch, Mohammed and Eich, Andreas and
Glazyrin, Konstantin and Grzechnik, Andrzej and Dronskowski,
Richard and Friese, Karen},
title = {{N}ew insights on the {G}e{S}e x {T}e 1− x phase diagram
from theory and experiment},
journal = {Acta crystallographica / B Structural science, crystal
engineering and materials Section B},
volume = {75},
number = {2},
issn = {2052-5206},
address = {Oxford [u.a.]},
publisher = {Wiley-Blackwell},
reportid = {FZJ-2019-03709},
pages = {246 - 256},
year = {2019},
abstract = {The high-pressure and low-temperature behaviour of the
GeSexTe1−x system (x = 0, 0.2, 0.5, 0.75, 1) was studied
using a combination of powder diffraction measurements and
first-principles calculations. Compounds in the stability
field of the GeTe structure type (x = 0, 0.2, 0.5) follow
the high-pressure transition pathway: GeTe-I (R3m) →
GeTe-II (f.c.c.) → GeTe-III (Pnma). The newly determined
GeTe-III structure is isostructural to β-GeSe, a
high-pressure and high-temperature polymorph of GeSe.
Pressure-dependent formation enthalpies and stability
regimes of the GeSexTe1−x polymorphs were studied by DFT
calculations. Hexagonal Ge4Se3Te is stable up to at least
25 GPa. Significant differences in the high-pressure and
low-temperature behaviour of the GeTe-type structures and
the hexagonal phase are highlighted. The role of Ge...Ge
interactions is elucidated using the crystal orbital
Hamilton population method. Finally, a sketch of the
high-pressure phase diagram of the system is provided.},
cin = {JCNS-2 / PGI-4 / JARA-FIT / JARA-HPC},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
$I:(DE-82)080009_20140620$ / $I:(DE-82)080012_20140620$},
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) / Quantum chemistry of functional
chalcogenide for phase-change memories and other
applications $(jara0033_20171101)$},
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 / $G:(DE-Juel1)jara0033_20171101$},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000463912400017},
doi = {10.1107/S2052520619001847},
url = {https://juser.fz-juelich.de/record/863705},
}