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@ARTICLE{Wessels:192473,
      author       = {Wessels, Philipp and Ewald, Johannes and Wieland, Marek and
                      Nisius, Thomas and Vogel, Andreas and Viefhaus, Jens and
                      Meier, Guido and Wilhein, Thomas and Drescher, Markus},
      title        = {{T}ime-resolved imaging of domain pattern destruction and
                      recovery via nonequilibrium magnetization states},
      journal      = {Physical review / B},
      volume       = {90},
      number       = {18},
      issn         = {1098-0121},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PUBDB-2014-04077},
      pages        = {184417},
      year         = {2014},
      note         = {OA},
      abstract     = {The destruction and formation of equilibrium multidomain
                      patterns in permalloy (Ni80Fe20) microsquares has been
                      captured using pump-probe x-ray magnetic circular dichroism
                      (XMCD) spectromicroscopy at a new full-field magnetic
                      transmission soft x-ray microscopy endstation with
                      subnanosecond time resolution. The movie sequences show the
                      dynamic magnetization response to intense Oersted field
                      pulses of approximately 200-ps root mean square (rms)
                      duration and the magnetization reorganization to the
                      ground-state domain configuration. The measurements display
                      how a vortex flux-closure magnetization distribution emerges
                      out of a nonequilibrium uniform single-domain state. During
                      the destruction of the initial vortex pattern, we have
                      traced the motion of the central vortex core that is ejected
                      out of the microsquare at high velocities exceeding 1 km/s.
                      A reproducible recovery into a defined final vortex state
                      with stable chirality and polarity could be achieved. Using
                      an additional external bias field, the transient reversal of
                      the square magnetization direction could be monitored and
                      consistently reproduced by micromagnetic simulations.},
      cin          = {UNI/EXP / FS-PE / MPSD / UNI/CUI},
      ddc          = {530},
      cid          = {$I:(DE-H253)UNI_EXP-20120731$ / I:(DE-H253)FS-PE-20120731 /
                      I:(DE-H253)MPSD-20120731 / $I:(DE-H253)UNI_CUI-20121230$},
      pnm          = {PETRA Beamline P04 (POF2-54G14) / CUI - Hamburger Zentrum
                      für ultraschnelle Beobachtung (194651731) / FS-Proposal:
                      I-20120127 (I-20120127)},
      pid          = {G:(DE-H253)POF2-P04-20130405 / G:(GEPRIS)194651731 /
                      G:(DE-H253)I-20120127},
      experiment   = {EXP:(DE-H253)P-P04-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000345640600005},
      doi          = {10.1103/PhysRevB.90.184417},
      url          = {https://bib-pubdb1.desy.de/record/192473},
}