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@INPROCEEDINGS{Qdemat:1031665,
      author       = {Qdemat, Asmaa and Kentzinger, Emmanuel and Buitenhuis,
                      Johan and Pütter, Sabine and Hussein, Mai and
                      Bednarski-Meinke, Connie and Petracic, Oleg and Rücker,
                      Ulrich and Brückel, Thomas},
      title        = {{M}agnetic {N}anocaps: {I}mpact of {C}urvature on
                      {S}tructural and {M}agnetic {P}roperties of thin {F}ilms},
      reportid     = {FZJ-2024-05775},
      year         = {2024},
      abstract     = {Magnetic nanocaps, formed by depositing Co/Pd multilayers
                      on highly ordered arrays of silicananospheres, present a
                      promising area of study due to their unique properties. This
                      research focuseson fabricating and characterizing these
                      nanocaps and comparing them to films deposited on flat
                      silicon substrates. Using an advanced drop-casting method,
                      we prepared two-dimensional arraysof silica nanospheres with
                      diameters of 50 nm and 200 nm [1]. The curvature of these
                      nanospheresinduced lateral variations in film thickness,
                      affecting the material properties. Structural analysisusing
                      X-ray reflectivity and Grazing Incidence Small Angle X-ray
                      Scattering (GISAXS) revealed thecurvature-induced
                      morphology. Magnetic measurements via SQUID indicated
                      distinct properties, includinglow coercivity and altered
                      anisotropy axis direction, compared to flat films.
                      Depth-resolvedmagnetization profiles were determined using
                      Polarized Neutron Reflectivity (PNR). Additionally,Grazing
                      Incidence Small Angle Neutron Scattering (GISANS) was
                      employed to investigate in-planelateral magnetic
                      fluctuations. GISANS provided detailed information on the
                      spatial distribution andcorrelations of magnetic domains
                      within the nanocaps, revealing how the curvature and
                      thicknessvariations influence magnetic interactions at the
                      nanoscale. This comprehensive study correlatesthe magnetic
                      and structural properties of thin films with varying
                      thicknesses and nanosphere radii,enhancing our understanding
                      of curvature’s impact on nanostructure formation and
                      magnetic behavior,and guiding the design of functional
                      magnetic materials for technological
                      applications.References:[1] A. Qdemat, et.al., RSC Adv., 10,
                      2020},
      month         = {Oct},
      date          = {2024-10-08},
      organization  = {JCNS Workshop 2024, Trends and
                       Perspectives in Neutron Scattering:
                       Functional Interfaces, Evangelische
                       Akademie Tutzing (Germany), 8 Oct 2024
                       - 11 Oct 2024},
      subtyp        = {Invited},
      cin          = {JCNS-2 / JARA-FIT / IBI-4 / JCNS-4},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / $I:(DE-82)080009_20140620$ /
                      I:(DE-Juel1)IBI-4-20200312 / I:(DE-Juel1)JCNS-4-20201012},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
                      Research (JCNS) (FZJ) (POF4-6G4)},
      pid          = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/1031665},
}