Polar Domains in Lead Titanate Films under Tensile Strain


Catalan, G. and Janssens, A. and Rispens, G. and Csiszar, S. and Seeck, O. and Rijnders, G. and Blank, D.H.A. and Noheda, B. (2006) Polar Domains in Lead Titanate Films under Tensile Strain. Physical Review Letters, 96 (12). p. 127602. ISSN 0031-9007

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Abstract:Thin films of PbTiO3, a classical ferroelectric, have been grown under tensile strain on single-crystal substrates of DyScO3. The films, of only 5 nm thickness, grow fully coherent with the substrate, as evidenced by synchrotron x-ray diffraction. A mapping of the reciprocal space reveals intensity modulations (satellites) due to regularly spaced polar domains in which the polarization appears rotated away from the substrate normal, characterizing a low-symmetry phase not observed in the bulk material. This could have important practical implications since these phases are known to be responsible for ultrahigh piezoelectric responses in complex systems.
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Copyright:© 2006 American Physical Society
Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/59086
Official URL:http://dx.doi.org/10.1103/PhysRevLett.96.127602
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