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@ARTICLE{Weels:904794,
      author       = {Weßels, Teresa and Kovács, András and Gliga, Sebastian
                      and Finizio, Simone and Caron, Jan and Dunin-Borkowski,
                      Rafal E.},
      title        = {{Q}uantitative imaging of the magnetic field distribution
                      in an artificial spin ice studied by off-axis electron
                      holography},
      journal      = {Journal of magnetism and magnetic materials},
      volume       = {543},
      issn         = {0304-8853},
      address      = {Amsterdam},
      publisher    = {North-Holland Publ. Co.},
      reportid     = {FZJ-2022-00124},
      pages        = {168535 -},
      year         = {2022},
      abstract     = {The magnetic state, including the stray fields, of a chiral
                      pattern of interacting permalloy nanomagnets is studied
                      using off-axis electron holography in the transmission
                      electron microscope. The projected in-plane magnetisation of
                      the nanomagnets is reconstructed from the experimental
                      magnetic phase shift using model-based iterative
                      reconstruction. The thickness and chemical composition of
                      the nanomagnets are characterised in cross-sectional
                      geometry. The average value of the magnetic polarisation of
                      the permalloy through the thickness of the sample is
                      measured to be 0.73 T. This value is lower than the bulk
                      value of 1 T, likely as a result of a combination of the
                      microstructure, composition and possible oxidation of the
                      nanomagnets. The experimental results are compared to
                      micromagnetic simulations to confirm the magnetic states and
                      to understand the switching processes in the magnetic
                      nanoislands.},
      cin          = {ER-C-1},
      ddc          = {530},
      cid          = {I:(DE-Juel1)ER-C-1-20170209},
      pnm          = {5351 - Platform for Correlative, In Situ and Operando
                      Characterization (POF4-535)},
      pid          = {G:(DE-HGF)POF4-5351},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000710711300007},
      doi          = {10.1016/j.jmmm.2021.168535},
      url          = {https://juser.fz-juelich.de/record/904794},
}