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@ARTICLE{Fang:887812,
      author       = {Fang, Xufei and Ding, Kuan and Janocha, Stephan and
                      Minnert, Christian and Rheinheimer, Wolfgang and Frömling,
                      Till and Durst, Karsten and Nakamura, Atsutomo and Rödel,
                      Jürgen},
      title        = {{N}anoscale to microscale reversal in room-temperature
                      plasticity in {S}r{T}i{O}3 by tuning defect concentration},
      journal      = {Scripta materialia},
      volume       = {188},
      issn         = {1359-6462},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2020-04438},
      pages        = {228 - 232},
      year         = {2020},
      abstract     = {Incipient room-temperature plastic deformation in
                      single-crystal SrTiO3 at the nanoscale and the microscale is
                      contrasted by applying a scale-dependent indentation
                      technique. Using nanoindentation pop-in, nanoindentation
                      creep, and an evaluation of dislocation spacing via etch pit
                      study, we demonstrate a reversal of yield stress for
                      crystals with different vacancy concentrations and
                      pre-existing dislocation densities. A competing mechanism
                      between dislocation nucleation and dislocation motion on
                      crystal plasticity at different length scales is
                      highlighted. This finding enables us to complete the
                      understanding of dislocation-mediated plasticity for ceramic
                      oxides at the nanoscale as compared to the microscale and
                      macroscale.},
      cin          = {IEK-1},
      ddc          = {670},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {899 - ohne Topic (POF3-899)},
      pid          = {G:(DE-HGF)POF3-899},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000558747100044},
      doi          = {10.1016/j.scriptamat.2020.07.033},
      url          = {https://juser.fz-juelich.de/record/887812},
}