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Strain-driven control of piezoelectricity in (Na,Bi)TiO3-BaTiO3 epitaxial thin films.
- Source :
-
Applied Physics Letters . 5/13/2013, Vol. 102 Issue 19, p192901. 5p. 2 Charts, 5 Graphs. - Publication Year :
- 2013
-
Abstract
- Thermal strain effect on the piezoelectricity was investigated for (Na,Bi)TiO3-BaTiO3 (NBT-BT) thin films on various substrates with (100) and (110) orientations. The compressive-thermal strain caused an increase in the remnant polarization unaccompanied by a decrease in dielectric permittivity, which resulted in enhancement of the piezoelectric coefficient, e*31. For films on (110) substrates, the crystal lattices were distorted to orthorhombic symmetry under both the tensile- and compressive-strains and the in-plane anisotropy of piezoelectricity emerged with e*31 as large as -19 to -20.6 C/m2. We conclude that the large piezoelectricity in NBT-BT films on (110) substrates is related to the appearance of orthorhombic phase. [ABSTRACT FROM AUTHOR]
- Subjects :
- *THIN films
*CRYSTALLOGRAPHY
*PIEZOELECTRICITY
*PYROELECTRICITY
*LATTICE theory
Subjects
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 102
- Issue :
- 19
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 87655977
- Full Text :
- https://doi.org/10.1063/1.4804135