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@ARTICLE{Wang:861807,
      author       = {Wang, Li-Ming and Qdemat, Asma and Petracic, Oleg and
                      Kentzinger, Emmanuel and Rücker, Ulrich and Zheng, Fengshan
                      and Lu, Penghan and Wei, Xiankui and Dunin-Borkowski, Rafal
                      and Brückel, Thomas},
      title        = {{M}anipulation of dipolar magnetism in low-dimensional iron
                      oxide nanoparticle assemblies},
      journal      = {Physical chemistry, chemical physics},
      volume       = {21},
      number       = {11},
      issn         = {1463-9076},
      address      = {Cambridge},
      publisher    = {RSC Publ.},
      reportid     = {FZJ-2019-02235},
      pages        = {6171 - 6177},
      year         = {2019},
      abstract     = {The manipulation of magnetic states in nanoparticle
                      supercrystals promises new pathways to design
                      nanocrystalline magnetic materials and devices.
                      Trench-patterned silicon substrates were used as templates
                      to guide the self-assembly of iron oxide nanoparticles.
                      Grazing incidence small angle X-ray scattering shows that
                      the nanoparticles form a long-range ordered structure along
                      the trench direction while in the direction perpendicular to
                      the trenches, no coherent structure is observable. Electron
                      holography provides evidence of an ordered magnetic state of
                      nanoparticle moments in the remanent state after the
                      application of a saturation magnetic field parallel to the
                      trenches. However, a disordered magnetic state was observed
                      in a perpendicular geometry. Hysteresis loops indicate that
                      the nanoparticle moments form a superferromagnetic state for
                      the geometry parallel to the trenches. Memory effect
                      investigations reveal that the disordered magnetic state
                      corresponds to a collective superspin glass state in the
                      perpendicular geometry, while the superferromagnetic state
                      in the parallel geometry suppresses the superspin glass
                      state.},
      cin          = {JCNS-2 / PGI-4 / JARA-FIT / JCNS-HBS / PGI-5 / ER-C-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
                      $I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-HBS-20180709 /
                      I:(DE-Juel1)PGI-5-20110106 / I:(DE-Juel1)ER-C-1-20170209},
      pnm          = {144 - Controlling Collective States (POF3-144) / 524 -
                      Controlling Collective States (POF3-524) / 6212 - Quantum
                      Condensed Matter: Magnetism, Superconductivity (POF3-621) /
                      6213 - Materials and Processes for Energy and Transport
                      Technologies (POF3-621) / 6G4 - Jülich Centre for Neutron
                      Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-144 / G:(DE-HGF)POF3-524 /
                      G:(DE-HGF)POF3-6212 / G:(DE-HGF)POF3-6213 /
                      G:(DE-HGF)POF3-6G4},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:30821806},
      UT           = {WOS:000462659300029},
      doi          = {10.1039/C9CP00302A},
      url          = {https://juser.fz-juelich.de/record/861807},
}