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@ARTICLE{Xiao:19020,
author = {Xiao, Y. and Su, Y. and Kumar, C. M. N. and Ritter, C. and
Mittal, R. and Price, S. and Perßon, J. and Brückel, T.},
title = {{P}hysical properties, crystal and magnetic structure of
layered {F}e(1.11){T}e(1-) (x) {S}e (x) superconductors},
journal = {The European physical journal / B},
volume = {82},
issn = {1434-6028},
address = {Berlin},
publisher = {Springer},
reportid = {PreJuSER-19020},
pages = {113-121},
year = {2011},
note = {Record converted from VDB: 12.11.2012},
abstract = {The physical and structural properties of Fe1.11Te and
Fe1.11Te0.5Se0.5 have been investigated by means of X-ray
and neutron diffraction as well as physical property
measurements. For the Fe1.11Te compound, the structure
distortion from a tetragonal to monoclinic phase takes place
at 64 K accompanied with the onset of antiferromagnetic
order upon cooling. The magnetic structure of the monoclinic
phase was confirmed to be of antiferromagnetic configuration
with a propagation vector k = (1/2, 0, 1/2) based on
Rietveld refinement of neutron powder diffraction data. The
structural/magnetic transitions are also clearly visible in
magnetic, electronic and thermodynamic measurements. For
superconducting Fe1.11Te0.5Se0.5 compound, the
superconducting transition with T (c) = 13.4 K is observed
in the resistivity and ac susceptibility measurements. The
upper critical field H (c2) is obtained by measuring the
resistivity under different magnetic fields. The Kim's
critical state model is adopted to analyze the temperature
dependence of the ac susceptibility and the intergranular
critical current density is calculated as a function of both
field amplitude and temperature. Neutron diffraction results
show that Fe1.11Te0.5Se0.5 crystalizes in tetragonal
structure at 300 K as in the parent compound Fe1.11Te and no
structural distortion is detected upon cooling to 2 K.
However an anisotropic thermal expansion anomaly is observed
around 100 K.},
keywords = {J (WoSType)},
cin = {PGI-4 / JCNS-2 / JARA-FIT},
ddc = {530},
cid = {I:(DE-Juel1)PGI-4-20110106 / I:(DE-Juel1)JCNS-2-20110106 /
$I:(DE-82)080009_20140620$},
pnm = {Grundlagen für zukünftige Informationstechnologien /
Großgeräte für die Forschung mit Photonen, Neutronen und
Ionen (PNI)},
pid = {G:(DE-Juel1)FUEK412 / G:(DE-Juel1)FUEK415},
shelfmark = {Physics, Condensed Matter},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000293705900002},
doi = {10.1140/epjb/e2011-10567-6},
url = {https://juser.fz-juelich.de/record/19020},
}