Piezoelectricity in the dielectric component of nanoscale dielectric/ferroelectric superlattices

Abstract

The origin of the functional properties of complex oxide superlattices can be resolved using time-resolved synchrotron x-ray diffraction into contributions from the component layers making up the repeating unit. The CaTiO3 layers of a CaTiO3/BaTiO3 superlattice have a piezoelectric response to an applied electric field, consistent with a large continuous polarization throughout the superlattice. The overall piezoelectric coefficient at large strains, 54 pm/V, agrees with first-principles predictions in which a tetragonal symmetry is imposed on the superlattice by the SrTiO3 substrate.

arXiv comment4 figures

References in corpus (7)

• Theory of polarization enhancement in epitaxial BaTiO${}_3$/SrTiO${}_3$ superlattices
• Unusual behaviour of the ferroelectric polarization in PbTiO${}_3$/SrTiO${}_3$ superlattices
• Domain enhanced interlayer coupling in ferroelectric/paraelectric superlattices
• Compositional Inversion Symmetry Breaking in Ferroelectric Perovskites
• Polarization enhancement in two- and three-component ferroelectric superlattices
• Predicting polarization and nonlinear dielectric response of arbitrary perovskite superlattice sequences
• Strain-coupled ferroelectric polarization in BaTiO3-CaTiO3 superlattices

Cited by in corpus (6)

• Interface enhancement of ferroelectricity in CaTiO${}_3$/BaTiO${}_3$ superlattices
• Roto-flexoelectric coupling impact on the phase diagrams and pyroelectricity of thin SrTiO3 films
• Domain alignment within ferroelectric/dielectric PbTiO${}_3$/SrTiO${}_3$ superlattice nanostructures
• Modeling functional piezoelectricity in perovskite superlattices with competing instabilities
• Optically Induced Picosecond Lattice Compression in the Dielectric Component of a Strongly Coupled Ferroelectric/Dielectric Superlattice
• Stability, Evolution and Switching of Ferroelectric Domain Structures in Lead-free BaZr${}_{0.2}$Ti${}_{0.8}$O${}_3$-Ba${}_{0.7}$Ca${}_{0.3}$TiO${}_3$ System: Thermodynamic Analysis and Phase-field Simulations