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@ARTICLE{Keeble:12079,
      author       = {Keeble, D.J. and Wicklein, S. and Dittmann, R. and Ravelli,
                      L. and Mackie, R.A. and Egger, W.},
      title        = {{I}dentification of {A}- and {B}-site cation vacancy
                      defects in perovskite oxide thin films},
      journal      = {Physical review letters},
      volume       = {105},
      issn         = {0031-9007},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PreJuSER-12079},
      pages        = {226102},
      year         = {2010},
      note         = {D. J. K. acknowledges European Commission Programme
                      RII3-CT-2003-505925. We thank C. Hugenschmidt for providing
                      the NEUPOMUC beam line. D. J. K. thanks I. Makkonen,
                      Helsinki University of Technology, for MIKA/DOPPLER
                      support.},
      abstract     = {Cation vacancies on both sublattices (V-Ti, V-Sr) have been
                      identified in homoepitaxial pulsed laser deposited SrTiO3
                      films using high intensity variable energy positron
                      annihilation lifetime spectroscopy (PALS) measurements. Film
                      nonstoichiometry was varied by varying laser fluence. PALS
                      showed that on increasing the fluence above the Ti/Sr
                      similar to 1 value, the concentration ratio [V-Sr]/[V-Ti]
                      systematically increased. Reducing the fluence into the
                      Ti-poor region below resulted in additional vacancy cluster
                      defect formation. Vacancy concentrations greater than
                      similar to 50 ppm were observed in all films.},
      keywords     = {J (WoSType)},
      cin          = {IFF-6 / JARA-FIT},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB786 / $I:(DE-82)080009_20140620$},
      pnm          = {Grundlagen für zukünftige Informationstechnologien},
      pid          = {G:(DE-Juel1)FUEK412},
      experiment   = {EXP:(DE-MLZ)NEPOMUC-20140101},
      shelfmark    = {Physics, Multidisciplinary},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000284532900018},
      doi          = {10.1103/PhysRevLett.105.226102},
      url          = {https://juser.fz-juelich.de/record/12079},
}