@article{33606,
  keywords = {transmission electron microscopy, substrates, Electric fields, Domain walls, ferroelectricity, Phase boundaries, piezoelectricity, Epitaxial films, Domain architectures, X ray diffraction analysis, Substrate clamping, Morphotropic phase boundary, Tetragonal domain variants},
  author = {J Ouyang and J Slusker and I Levin and D.-M Kim and C.-B Eom and Ramamoorthy Ramesh and A.L Roytburd},
  title = {Engineering of self-assembled domain architectures with ultra-high piezoelectric response in epitaxial ferroelectric films},
  abstract = {Substrate clamping and inter-domain pinning limit movement of non-180° domain walls in ferroelectric epitaxial films thereby reducing the resulting piezoelectric response of ferroelectric layers. Our theoretical calculations and experimental studies of the epitaxial PbZrxTi1-xO 3 films grown on single crystal SrTiO3 demonstrate that for film compositions near the morphotropic phase boundary it is possible to obtain mobile two-domain architectures by selecting the appropriate substrate orientation. Transmission electron microscopy, X-ray diffraction analysis, and piezoelectric force microscopy revealed that the PbZr0.52Ti 0.48O3 films grown on (101) SrTiO3 substrates feature self-assembled two-domain structures, consisting of two tetragonal domain variants. For these films, the low-field piezoelectric coefficient measured in the direction normal to the film surface (d33) is 200 pmV-1, which agrees well with the theoretical predictions. Under external AC electric fields of about 30 kVcm-1, the (101) films exhibit reversible longitudinal strains as high as 0.35 %, which correspond to the effective piezoelectric coefficients in the order of 1000 pm V-1 and can be explained by elastic softening of the PbZrxTi 1-xO3 ferroelectrics near the morphotropic phase boundary. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA.},
  year = {2007},
  journal = {Advanced Functional Materials},
  volume = {17},
  number = {13},
  pages = {2094-2100},
  issn = {1616301X},
  doi = {10.1002/adfm.200600823},
  note = {cited By 47},
  language = {eng},
}