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@ARTICLE{Chowdhury:857617,
      author       = {Chowdhury, N. and Kleemann, W. and Petracic, O. and
                      Kronast, F. and Doran, A. and Scholl, A. and Cardoso, S. and
                      Freitas, P. and Bedanta, S.},
      title        = {360 ∘ domain walls in magnetic thin films with uniaxial
                      and random anisotropy},
      journal      = {Physical review / B},
      volume       = {98},
      number       = {13},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2018-06602},
      pages        = {134440},
      year         = {2018},
      abstract     = {X-ray photoemission electron microscopy (XPEEM) and
                      magneto-optic Kerr effect (MOKE) microscopy have been
                      performed on a metal-insulator multilayer of
                      [Co80Fe20(t=1.8nm)/Al2O3(3nm)]9 to image 360∘ domain walls
                      (DWs) along easy and hard axes, respectively. Their creation
                      and annihilation can be directly visualized under
                      application of a magnetic field. XPEEM experiments and
                      micromagnetic simulations show that 360∘ DWs occur through
                      the merger of 180∘ DWs of opposite chiralities along the
                      easy axis. They are stable even under application of large
                      magnetic fields. Formation of 360∘ DWs observed along the
                      hard axis is attributed to symmetry breaking of the coherent
                      spin rotation. Their formation in metal-insulator
                      multilayers is explained as being due to the presence of an
                      orientational dispersion of anisotropy axes in the film
                      grains that is comparable to an overall uniaxial anisotropy
                      term. Our results are confirmed numerically using
                      micromagnetic simulations.},
      cin          = {JCNS-2 / PGI-4 / JARA-FIT},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
                      $I:(DE-82)080009_20140620$},
      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},
      UT           = {WOS:000448160200002},
      doi          = {10.1103/PhysRevB.98.134440},
      url          = {https://juser.fz-juelich.de/record/857617},
}