Piezoelectricity in the dielectric component of nanoscale dielectric/ferroelectric superlattices.
Journal Article
·
· Phys. Rev. Lett.
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 CaTiO{sub 3} layers of a CaTiO{sub 3}/BaTiO{sub 3} 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 SrTiO{sub 3} substrate.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 979884
- Report Number(s):
- ANL/MSD/JA-65962; PRLTAO; TRN: US1003400
- Journal Information:
- Phys. Rev. Lett., Vol. 104, Issue 2010; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- ENGLISH
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