Mapping the complex evolution of ferroelastic/ferroelectric domain patterns in epitaxially strained PbTiO3 heterostructures

We study the complex ferroelastic/ferroelectric domain structure in the prototypical ferroelectric PbTiO3 epitaxially strained on (110)o-oriented DyScO3 substrates, using a combination of atomic force microscopy, laboratory and synchrotron x-ray diffraction and high resolution scanning transmission electron microscopy. We observe that the anisotropic strain imposed by the orthorhombic substrate creates a large asymmetry in the domain configuration, with domain walls macroscopically aligned along one of the two in-plane directions. We show that the periodicity as a function of film thickness deviates from the Kittel law. As the ferroelectric film thickness increases, we find that the domain configuration evolves from flux-closure to a/c-phase, with a larger scale arrangement of domains into superdomains.

    Organizational unit
    Triscone Group
    Referenced by the following DOI
    • 10.1063/5.0154161
    Creative Commons Attribution 4.0 International
    Ferroelectric epitaxial thin films, Ferroelectric and ferroelastic domains, High Resolution Transmission Electron Microscopy, X-Ray Diffraction, Nanodiffraction
Publication date13/04/2023
Retention date14/07/2033
accessLevelPublicAccess levelPublic
duaNoneContract on the use of data
  • Lichtensteiger, Céline
  • Hadjimichael, Marios
  • Zatterin, Edoardo
  • Su, Chia-Ping
  • Gaponenko, Iaroslav orcid
  • Tovaglieri, Ludovica
  • Paruch, Patrycja
  • Gloter, Alexandre
  • Triscone, Jean-Marc
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