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@ARTICLE{Paul:62509,
      author       = {Paul, A. and Buchmeier, M. and Bürgler, D. E. and Rücker,
                      U. and Schneider, C. M.},
      title        = {{T}wisted magnetization state at the interface of an
                      antiferromagnetically coupled {F}e/{S}i multilayer as probed
                      by specular and off-specular polarized neutron scattering},
      journal      = {Physical review / B},
      volume       = {77},
      number       = {18},
      issn         = {1098-0121},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PreJuSER-62509},
      pages        = {184409},
      year         = {2008},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {We have investigated strongly coupled Fe/Si multilayers by
                      polarized neutron scattering in specular and off-specular
                      modes. By using the specular reflectivity patterns as a
                      function of the applied field, we have extracted the
                      magnetization angles for layers buried in the stack. In
                      order to explore the magnetization depth profile across the
                      interfaces the neutron data have been combined with
                      micromagnetic simulations. A rigid and/or uniform
                      approximation of the layer magnetization is found to
                      describe the data over a considerable range of the applied
                      field but reveals significant shortcomings around an
                      intermediate field between remanence and saturation. For
                      these intermediate field values, we found (i) close
                      agreement of the magnetization state with a twisted state
                      model, which indicates the formation of exchange-spring-type
                      spin structure; and (ii) depending on the magnetic history
                      of the specimen, an enhanced off-specular magnetic
                      scattering of neutrons at the antiferromagnetic Bragg-peak
                      positions, which indicates the presence of buried domains.
                      However, an extraction of the state of magnetic chirality
                      within a single ferromagnetic layer is in itself challenging
                      and is further complicated as the length scale of these
                      domains becomes smaller than the neutron coherence length.},
      keywords     = {J (WoSType)},
      cin          = {IFF-4 / IFF-9 / JARA-FIT / IFF-6 / Jülich Centre for
                      Neutron Science JCNS (JCNS) ; JCNS},
      ddc          = {530},
      cid          = {I:(DE-Juel1)VDB784 / I:(DE-Juel1)VDB789 /
                      $I:(DE-82)080009_20140620$ / I:(DE-Juel1)VDB786 /
                      I:(DE-Juel1)JCNS-20121112},
      pnm          = {Grundlagen für zukünftige Informationstechnologien /
                      Kondensierte Materie / Großgeräte für die Forschung mit
                      Photonen, Neutronen und Ionen (PNI)},
      pid          = {G:(DE-Juel1)FUEK412 / G:(DE-Juel1)FUEK414 /
                      G:(DE-Juel1)FUEK415},
      shelfmark    = {Physics, Condensed Matter},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000256885300057},
      doi          = {10.1103/PhysRevB.77.184409},
      url          = {https://juser.fz-juelich.de/record/62509},
}