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@ARTICLE{Feygenson:8838,
      author       = {Feygenson, M. and Schweika, W. and Ioffe, A. and
                      Vakhrushev, S. B. and Brückel, T.},
      title        = {{M}agnetic phase transition in confined {M}n{O}
                      nanoparticles studied by polarized neutron scattering},
      journal      = {Physical review / B},
      volume       = {81},
      number       = {6},
      issn         = {1098-0121},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PreJuSER-8838},
      pages        = {064423},
      year         = {2010},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {We have investigated the magnetic ordering and the phase
                      transition in MnO nanoparticles confined in a porous glass
                      using polarized neutron scattering. These MnO nanoparticles
                      are best described as extended wormlike structures with a
                      mean diameter of 70 angstrom. We observe an apparent
                      continuous magnetic phase transition in MnO nanoparticles,
                      in contrast to the well-known discontinuous phase transition
                      in bulk MnO. By polarization analysis, separating the
                      magnetic scattering, it is found that within the individual
                      MnO nanoparticles about $60\%$ of atoms remain disordered in
                      the low-temperature limit, presumably due to interactions
                      between nanoparticles and glass walls. The continuous
                      character of the phase transition and the unusual
                      temperature dependence suggests a surface-induced disorder
                      phenomenon.},
      keywords     = {J (WoSType)},
      cin          = {IFF-4 / IFF-5 / Jülich Centre for Neutron Science JCNS
                      (JCNS) ; JCNS / JARA-FIT},
      ddc          = {530},
      cid          = {I:(DE-Juel1)VDB784 / I:(DE-Juel1)VDB785 /
                      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},
      experiment   = {EXP:(DE-MLZ)DNS-20140101},
      shelfmark    = {Physics, Condensed Matter},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000274998100074},
      doi          = {10.1103/PhysRevB.81.064423},
      url          = {https://juser.fz-juelich.de/record/8838},
}