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@ARTICLE{Xia:20189,
      author       = {Xia, X. and Metwalli, E. and Ruderer, M.A. and Korstgens,
                      V. and Busch, P. and Boni, P. and Muller-Buschbaum, P.},
      title        = {{N}anostructured diblock copolymer films with embedded
                      magnetic nanoparticles},
      journal      = {Journal of physics / Condensed matter},
      volume       = {23},
      issn         = {0953-8984},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {PreJuSER-20189},
      pages        = {254203},
      year         = {2011},
      note         = {We thank Barbara Russ and Andreas Neubauer for their help
                      during the magnetic measurements and Walter Schirmacher for
                      fruitful discussion. XX thanks the Erasmus Mundus MaMaSELF
                      program for funding. MAR thanks the Bavarian State Ministry
                      of Sciences, Research and Arts for funding this research
                      work through the International Graduate School 'Materials
                      Science of Complex Interfaces' (CompInt).},
      abstract     = {Nanostructured diblock copolymer films with embedded
                      magnetic nanoparticles are prepared by solution casting. The
                      diblock copolymer polystyrene-block-polymethylmethacrylate
                      with a fully deuterated polystyrene block of a weight ratio
                      of 0.22 is used as a structure-directing matrix. Maghemite
                      nanoparticles (gamma-Fe2O3) are coated with polystyrene and
                      thus have a selective affinity to the minority block of the
                      diblock copolymer. The hybrid film morphology is
                      investigated as a function of nanoparticle concentration.
                      The surface structure is probed with atomic force microscopy
                      and scanning electron microscopy. The inner film structure
                      and the structure at the polymer-substrate interface are
                      detected with grazing incidence small angle neutron
                      scattering (GISANS). Irrespective of the nanoparticle
                      concentration a well developed micro-phase separation
                      structure is present. From the Bragg peaks observed in the
                      GISANS data a linear nanoparticle concentration dependence
                      of the inter-domain spacing of the micro-phase separation
                      structure is determined. The superparamagnetic and blocking
                      behavior can be explained with a generalized
                      Stoner-Wohlfarth-Neel theory which includes either an
                      elastic torque being exerted on the nanoparticles by the
                      field or a broad distribution of anisotropy constants.},
      keywords     = {J (WoSType)},
      cin          = {PGI-4 / JCNS (München) ; Jülich Centre for Neutron
                      Science JCNS (München) ; JCNS-FRM-II / JCNS-2},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-4-20110106 /
                      I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-2-20110106},
      pnm          = {Grundlagen für zukünftige Informationstechnologien /
                      Großgeräte für die Forschung mit Photonen, Neutronen und
                      Ionen (PNI)},
      pid          = {G:(DE-Juel1)FUEK412 / G:(DE-Juel1)FUEK415},
      experiment   = {EXP:(DE-MLZ)KWS2-20140101},
      shelfmark    = {Physics, Condensed Matter},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000291433000006},
      doi          = {10.1088/0953-8984/23/25/254203},
      url          = {https://juser.fz-juelich.de/record/20189},
}