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@ARTICLE{Xiao:11329,
      author       = {Xiao, Y. and Su, Y. and Li, H.-F. and Kumar, C. M. N. and
                      Mittal, R. and Persson, J. and Senyshyn, A. and Gross, K.
                      and Brückel, T.},
      title        = {{N}eutron diffraction investigation of the crystal and
                      magnetic structures in {KC}r{F}3 perovskite},
      journal      = {Physical review / B},
      volume       = {82},
      number       = {9},
      issn         = {1098-0121},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PreJuSER-11329},
      pages        = {094437},
      year         = {2010},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {KCrF3 represents another prototypical orbital-ordered
                      perovskite, where Cr2+ possesses the same electronic
                      configuration of 3d(4) as that of strongly Jahn-Teller
                      distorted Mn3+ in many colossal magnetoresistance
                      manganites. The crystal and magnetic structures of KCrF3
                      compound are investigated by using polarized and unpolarized
                      neutron powder-diffraction methods. The results show that
                      the KCrF3 compound crystallizes in tetragonal structure at
                      room temperature and undergoes a monoclinic distortion with
                      the decrease in temperature. The distortion of the crystal
                      structure indicates the presence of cooperative Jahn-Teller
                      distortion which is driven by orbital ordering. With
                      decreasing temperature, four magnetic phase transitions are
                      observed at 79.5, 45.8, 9.5, and 3.2 K, which suggests a
                      rich magnetic phase diagram. Below T-N = 79.5 K, the Cr2+
                      moment orders in an incommensurate antiferromagnetic
                      arrangement, which can be defined by the magnetic
                      propagation vector (1/2 + delta, 1/2 + delta, 0). The
                      incommensurate-commensurate magnetic transition occurs at
                      45.8 K and the magnetic propagation vector locks into (1/2,
                      1/2, 0) with the Cr moment of 3.34(5) mu(B), aligned
                      ferromagnetically in (220) plane, but antiferromagnetically
                      along [110] direction. Below 9.5 K, the canted
                      antiferromagnetic ordering and weak ferromagnetism arise
                      from the collinear antiferromagnetic structure while the
                      Dzyaloshinskii-Moriya interaction and tilted character of
                      the single-ion anisotropy might give rise to the complex
                      magnetic behaviors below 9.5 K.},
      keywords     = {J (WoSType)},
      cin          = {IFF-4 / IFF-5 / JARA-FIT / Jülich Centre for Neutron
                      Science JCNS (JCNS) ; JCNS},
      ddc          = {530},
      cid          = {I:(DE-Juel1)VDB784 / I:(DE-Juel1)VDB785 /
                      $I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-20121112},
      pnm          = {BioSoft: Makromolekulare Systeme und biologische
                      Informationsverarbeitung / Großgeräte für die Forschung
                      mit Photonen, Neutronen und Ionen (PNI)},
      pid          = {G:(DE-Juel1)FUEK505 / G:(DE-Juel1)FUEK415},
      experiment   = {EXP:(DE-MLZ)DNS-20140101 / EXP:(DE-MLZ)SPODI-20140101},
      shelfmark    = {Physics, Condensed Matter},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000282097200002},
      doi          = {10.1103/PhysRevB.82.094437},
      url          = {https://juser.fz-juelich.de/record/11329},
}