Ferroelectric nanodomains in epitaxial PbTiO3 films grown on SmScO3 and TbScO3 substrates

Abstract

Domain structures of 320 nm thin epitaxial films of ferroelectric PbTiO3 grown by MOCVD technique in identical conditions on SmScO3 and TbScO3 perovskite sub- strates have been investigated by Raman spectroscopy and piezoresponse force microscopy techniques. Phonon frequency shifts and typical domain structure motifs are discussed. The results reveal strikingly different domain structure architecture: domain structures of the PbTiO3 film grown on SmScO3 have dominantly a-domain orientation while strongly preferential c-domain orientation was found in the PbTiO3 film grown on the TbScO3 substrate. Differences between the two cases are traced back to the film-substrate lattice mismatch at the deposition temperature.

References in corpus (4)

• Domain walls of ferroelectric BaTiO3 within the Ginzburg-Landau-Devonshire phenomenological model
• Thermodynamic theory of epitaxial ferroelectric thin films with dense domain structures
• Universality of the Scaling Law for Ferroic Domains
• Contrast Mechanisms for the Detection of Ferroelectric Domains with Scanning Force Microscopy

Cited by in corpus (3)

• Multiple soft-mode vibrations of lead zirconate
• Manipulating Ferroelectric Domains in Nanostructures Under Electron Beams
• Close-circuit domain quadruplets in BaTiO${}_3$ nanorods embedded in SrTiO${}_3$ film