Abstract
Using the Landau–Ginzburg–Devonshire approach, the longitudinal piezoelectric coefficient in an arbitrary direction, d33*(θ), was calculated as a function of temperature in tetragonal BaTiO3 crystals. The direction along which d33*(θ) is maximum is a function of piezoelectric dij coefficients referred to the crystallographic coordinate system. Below a critical ratio of the shear and longitudinal coefficients, d15/d33, the maximum d33*(θ) lies along the [001] axis. As the low-temperature orthorhombic phase is approached on cooling, the d15 increases, reflecting softening of the lattice along the axis of the incipient orthorhombic distortion, and the direction of maximum d33*(θ) deviates significantly from the [001] axis. Our results suggest that the enhanced d33*(θ) coefficient along a direction other than the polar axis recently reported in some ferroelectrics is at least in part controlled by these intrinsic lattice effects.
References
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Dates
Type | When |
---|---|
Created | 23 years ago (July 26, 2002, 9:24 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 3, 2024, 4:35 p.m.) |
Indexed | 3 months ago (May 26, 2025, 4:26 a.m.) |
Issued | 23 years, 6 months ago (Jan. 28, 2002) |
Published | 23 years, 6 months ago (Jan. 28, 2002) |
Published Print | 23 years, 6 months ago (Jan. 28, 2002) |
@article{Damjanovic_2002, title={Crystal orientation dependence of the piezoelectric d33 coefficient in tetragonal BaTiO3 as a function of temperature}, volume={80}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.1445481}, DOI={10.1063/1.1445481}, number={4}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Damjanovic, Dragan and Brem, Franziska and Setter, Nava}, year={2002}, month=jan, pages={652–654} }