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@ARTICLE{Schwarzkopf:154114,
      author       = {Schwarzkopf, J. and Braun, D. and Schmidbauer, M. and Duk,
                      A. and Wördenweber, R.},
      title        = {{F}erroelectric domain structure of anisotropically
                      strained {N}a{N}b{O}3 epitaxial thin films},
      journal      = {Journal of applied physics},
      volume       = {115},
      number       = {20},
      issn         = {1089-7550},
      address      = {Melville, NY},
      publisher    = {American Institute of Physics},
      reportid     = {FZJ-2014-03512},
      pages        = {204105 -},
      year         = {2014},
      abstract     = {NaNbO3 thin films have been grown under anisotropic biaxial
                      strain on several oxide substrates byliquid-delivery spin
                      metalorganic chemical vapor deposition. Compressive lattice
                      strain of differentmagnitude, induced by the deposition of
                      NaNbO3 films with varying film thickness on NdGaO3single
                      crystalline substrates, leads to modifications of film
                      orientation and phase symmetry, whichare similar to the
                      phase transitions in Pb-containing oxides near the
                      morphotropic phase boundary.Piezoresponse force microscopy
                      measurements exhibit large out-of-plane polarization
                      components,but no distinctive domain structure, while C-V
                      measurements indicate relaxor properties in thesefilms. When
                      tensile strain is provoked by the epitaxial growth on
                      DyScO3, TbScO3, and GdScO3single crystalline substrates,
                      NaNbO3 films behave rather like a normal ferroelectric.
                      Theapplication of these rare-earth scandate substrates
                      yields well-ordered ferroelectric stripe domains ofthe type
                      a1/a2 with coherent domain walls aligned along the [001]
                      substrate direction as long as thefilms are fully strained.
                      With increasing plastic lattice relaxation, initially, a 2D
                      domain pattern withstill exclusively in-plane electric
                      polarization, and finally, domains with in-plane and
                      out-of-planepolar components evolve.},
      cin          = {PGI-8 / JARA-FIT},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-8-20110106 / $I:(DE-82)080009_20140620$},
      pnm          = {423 - Sensorics and bioinspired systems (POF2-423)},
      pid          = {G:(DE-HGF)POF2-423},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000337143500069},
      doi          = {10.1063/1.4876906},
      url          = {https://juser.fz-juelich.de/record/154114},
}