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@ARTICLE{Keppner:845349,
      author       = {Keppner, J. and Schubert, J. and Ziegner, M. and Mogwitz,
                      B. and Janek, J. and Korte, C.},
      title        = {{I}nfluence of texture and grain misorientation on the
                      ionic conduction in multilayered solid electrolytes –
                      interface strain effects in competition with blocking grain
                      boundaries},
      journal      = {Physical chemistry, chemical physics},
      volume       = {20},
      number       = {14},
      issn         = {1463-9084},
      address      = {Cambridge},
      publisher    = {RSC Publ.},
      reportid     = {FZJ-2018-02623},
      pages        = {9269 - 9280},
      year         = {2018},
      abstract     = {Interface strain and its influence on the ionic transport
                      along hetero-interfaces has gained a lot of attention over
                      the last decade and is controversially discussed. We
                      investigate the relaxation of mismatch induced interfacial
                      strain as a function of the degree of orientation/texture of
                      the columnar crystallites and assess the impact on the
                      oxygen ion conductivity in Er2O3/YSZ multilayer systems.
                      Results from X-ray diffraction clearly show, that the width
                      of the strained hetero-interface region increases with an
                      increasing degree of orientation of the crystallites. The
                      combined impact of film texture and strain at the
                      hetero-interfaces of the film on the ionic conductivity
                      however is not easily deduced from these measurements. The
                      samples with the highest degree of orientation, i.e. with
                      only one azimuthal variant, show strong anisotropic
                      electrical properties. In samples with a lower degree of
                      orientation, i.e. samples with a fiber texture, anisotropic
                      properties cannot be detected, possibly due to a geometrical
                      averaging of the electrical properties. The expected strain
                      induced monotonic increase of the ionic conductivity with
                      decreasing layer thickness and thus increasing interfacial
                      influence could only be detected for samples with a fiber
                      texture and a considerable degree of crystallite
                      misorientation. This leads to the important conclusion that
                      the texture and therefore the nature of the grain boundaries
                      and their network influence the ionic conductivity of the
                      multilayer thin films in the same order of magnitude as the
                      misfit induced interface strain. Thus, the potential design
                      of strain-controlled ionic conductors requires additionally
                      the control of the microstructure in terms of grain
                      orientation.},
      cin          = {IEK-3 / IEK-2 / PGI-9},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-3-20101013 / I:(DE-Juel1)IEK-2-20101013 /
                      I:(DE-Juel1)PGI-9-20110106},
      pnm          = {135 - Fuel Cells (POF3-135)},
      pid          = {G:(DE-HGF)POF3-135},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:29561548},
      UT           = {WOS:000429205700025},
      doi          = {10.1039/C7CP06951K},
      url          = {https://juser.fz-juelich.de/record/845349},
}