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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},
}