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@ARTICLE{Wrdenweber:133963,
      author       = {Wördenweber, Roger and Schubert, Jürgen and Ehlig, Tino
                      and Hollmann, Eugen},
      title        = {{R}elaxor ferro- and paraelectricity in anisotropically
                      strained {S}r{T}i{O}3 films},
      journal      = {Journal of applied physics},
      volume       = {113},
      number       = {16},
      address      = {Melville, NY},
      publisher    = {American Institute of Physics},
      reportid     = {FZJ-2013-02345},
      pages        = {164103 -},
      year         = {2013},
      abstract     = {The ferroelectric properties of anisotropically strained
                      SrTiO3 films are analyzed by detailed measurements of the
                      complex dielectric constant as function of temperature,
                      frequency, bias voltage and electric field direction. At low
                      temperatures, strain induces a relaxor-ferroelectric phase
                      that persists up to room temperature. The transition
                      temperature and characteristic parameters (e.g. Curie
                      temperature, static freezing temperature, degree of
                      diffuseness of the phase transition, activation energy) of
                      the relaxor phase depend strongly on the orientation of the
                      electric field and therefore on the amount of structural
                      strain in the given electric field direction. Also above the
                      ferroelectric transition temperature a relaxation of the
                      permittivity is visible, i.e. the strain causes a
                      relaxor-paraelectric behavior. Only at high enough
                      temperatures the relaxation time constant tends to zero and
                      the ‘classical’ dielectric state is obtained. Frequency
                      and time dependent relaxation experiments demonstrate an
                      extremely large distribution of the relaxation rates in both
                      relaxor states (ferroelectric and paraelectric) which is
                      indicative for the large distribution in the mobility of
                      polar SrTiO3 regions with randomly distributed directions of
                      dipole moments in the film. The large distribution might be
                      taken as an indication for a large distribution in size and
                      orientation of nanosize domains in the anisotropically
                      strained SrTiO3 film.},
      cin          = {PGI-8 / ICS-8 / JARA-FIT / PGI-9},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-8-20110106 / I:(DE-Juel1)ICS-8-20110106 /
                      $I:(DE-82)080009_20140620$ / I:(DE-Juel1)PGI-9-20110106},
      pnm          = {423 - Sensorics and bioinspired systems (POF2-423) / 453 -
                      Physics of the Cell (POF2-453) / 421 - Frontiers of charge
                      based Electronics (POF2-421)},
      pid          = {G:(DE-HGF)POF2-423 / G:(DE-HGF)POF2-453 /
                      G:(DE-HGF)POF2-421},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000318550300047},
      doi          = {10.1063/1.4802676},
      url          = {https://juser.fz-juelich.de/record/133963},
}