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@ARTICLE{LaTorre:850111,
      author       = {La Torre, Enrico and Smekhova, Alevtina and
                      Schmitz-Antoniak, Carolin and Ollefs, Katharina and Eggert,
                      Benedikt and Cöster, Birte and Walecki, Dirk and Wilhelm,
                      Fabrice and Rogalev, Andrei and Lindner, Jürgen and Bali,
                      Rantej and Banerjee, Rudra and Sanyal, Biplab and Wende,
                      Heiko},
      title        = {{L}ocal probe of irradiation-induced structural changes and
                      orbital magnetism in {F}e 60 {A}l 40 thin films via an
                      order-disorder phase transition},
      journal      = {Physical review / B},
      volume       = {98},
      number       = {2},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2018-04190},
      pages        = {024101},
      year         = {2018},
      abstract     = {Hard x-ray absorption and magnetic circular dichroism
                      spectroscopy have been applied to study the consequential
                      changes of the local environment around Fe atoms and their
                      orbital polarizations in 40 nm thick Fe60Al40 thin films
                      along the order-disorder (B2 → A2) phase transition
                      initiated by 20-keV Ne+ ion irradiation with fluences of
                      (0.75–6) ×1014 ions cm−2. The analysis of the extended
                      x-ray absorption fine structure spectra measured at the Fe K
                      edge at room temperature revealed an increased number of
                      Fe-Fe nearest neighbors from 3.47(7) to 5.0(1) and $∼1\%$
                      of volume expansion through the transition. The
                      visualization of the Fe and Al nearest-neighbor
                      rearrangement in the first coordination shell of Fe
                      absorbers via the transition was carried out by wavelet
                      transformations. The obtained changes in Fe coordination are
                      evidently reflected in the x-ray magnetic circular dichroism
                      spectra which show an increased orbital magnetic moment of
                      Fe atoms and a pronounced magnetic multielectronic
                      excitations peak at ∼60 eV above the edge. The amplitudes
                      of both peaks demonstrated similar dependencies on the
                      irradiation fluence. The results of self-consistent density
                      functional calculations on relaxed Fe60Al40 model structures
                      for the ordered (B2) and the disordered (A2) phases are
                      consistent with the experimental findings and point to the
                      formation of Fe-rich regions in the films studied.},
      cin          = {PGI-6},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-6-20110106},
      pnm          = {522 - Controlling Spin-Based Phenomena (POF3-522)},
      pid          = {G:(DE-HGF)POF3-522},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000437735700001},
      doi          = {10.1103/PhysRevB.98.024101},
      url          = {https://juser.fz-juelich.de/record/850111},
}