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@ARTICLE{Brown:10677,
      author       = {Brown, P.J. and Chatterji, T. and Stunault, A. and Su, Y.
                      and Xiao, Y. and Mittal, R. and Brückel, T. and Wolf, Th
                      and Adelmann, P.},
      title        = {{M}agnetization distribution in the tetragonal phase of
                      ${B}a{F}e_2{A}s_2$},
      journal      = {Physical review / B},
      volume       = {82},
      number       = {2},
      issn         = {1098-0121},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PreJuSER-10677},
      pages        = {024421},
      year         = {2010},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {We have determined the spatial distribution of the
                      magnetization induced by a field of 9 T in the tetragonal
                      phase of BaFe2As2 using polarized neutron diffraction.
                      Magnetic structure factors derived from the polarization
                      dependence of the intensities of Bragg reflections were used
                      to make a maximum-entropy reconstruction of the distribution
                      projected on the 110 plane. The reconstruction shows clearly
                      that the magnetization is confined to the region around the
                      iron atoms and that there is no significant magnetization
                      associated with either As or Ba atoms. The distribution of
                      magnetization around the Fe atom is significantly
                      nonspherical with a shape which is extended in the < 111 >
                      directions in the projection. These results show that the
                      electrons which give rise to the paramagnetic susceptibility
                      are confined to the Fe atoms their distribution suggests
                      that they occupy 3d t(2g)-type orbitals with approximate to
                      $60\%$ in those of xy symmetry.},
      keywords     = {J (WoSType)},
      cin          = {IFF-5 / IFF-4 / Jülich Centre for Neutron Science JCNS
                      (JCNS) ; JCNS / JARA-FIT},
      ddc          = {530},
      cid          = {I:(DE-Juel1)VDB785 / I:(DE-Juel1)VDB784 /
                      I:(DE-Juel1)JCNS-20121112 / $I:(DE-82)080009_20140620$},
      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},
      shelfmark    = {Physics, Condensed Matter},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000280173800004},
      doi          = {10.1103/PhysRevB.82.024421},
      url          = {https://juser.fz-juelich.de/record/10677},
}