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@ARTICLE{Kubacki:280884,
      author       = {Kubacki, Jerzy and Kajewski, Dariusz and Koehl, Annemarie
                      and Lenser, Christian and Dittmann, Regina and Szade, Jacek},
      title        = {{X}-ray absorption and resonant photoemission studies of
                      electroforming process in {F}e-doped {S}r{T}i{O} 3 epitaxial
                      films},
      journal      = {X-ray spectrometry},
      volume       = {44},
      number       = {5},
      issn         = {0049-8246},
      address      = {New York, NY [u.a.]},
      publisher    = {Wiley},
      reportid     = {FZJ-2016-00595},
      pages        = {339 - 343},
      year         = {2015},
      abstract     = {This work presents the results of the electronic structure
                      investigations of epitaxial $2\%$ Fe-doped SrTiO3 film. The
                      electroforming process of the film was performed inside the
                      ultra-high vacuum test chamber by applying positive 10 V
                      bias to the film with the use of the aluminium ‘brush’
                      electrode. The X-ray absorption and resonant photoemission
                      methods were used to study the effect of Fe doping and
                      electroformation on the electronic structure of the SrTiO3
                      films. Analysis of the valence band revealed the increase of
                      the photoelectron intensity in the band gap region as the
                      result of Fe doping. Electroformation caused a slight
                      variation of the iron originating electronic states derived
                      from the resonant photoemission, which can probably be
                      related to the increasing contribution from the Fe2+ ions
                      with respect to the Fe3+ ones. The titanium partial density
                      of states showed an increase in the band gap region after
                      the electroformation process. The significant decreases of
                      the iron concentration derived from the photoemission
                      spectra were found after electroforming procedure. The
                      observed changes can be related to the increased migration
                      of oxygen and possibly also iron ions provoked by a strong
                      electric field applied by the electrode, eventually leading
                      to modification of the local electronic structure.},
      cin          = {PGI-7},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-7-20110106},
      pnm          = {521 - Controlling Electron Charge-Based Phenomena
                      (POF3-521)},
      pid          = {G:(DE-HGF)POF3-521},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000360088600005},
      doi          = {10.1002/xrs.2637},
      url          = {https://juser.fz-juelich.de/record/280884},
}