Domain Size Dependence of Piezoelectric Properties of Ferroelectrics

Details Domain Size Dependence of Piezoelectric Properties of Ferroelectrics Domain Size Dependence of Piezoelectric Properties of Ferroelectrics

2004-10-15

arxiv.org/abs/cond-mat/0410403v1

Physics

Condensed Matter

Materials Science

submitted to Physical Review B

Scientific paper

10.1103/PhysRevB.72.014112

The domain size dependence of piezoelectric properties of ferroelectrics is investigated using a continuum Ginzburg-Landau model that incorporates the long-range elastic and electrostatic interactions. Microstructures with desired domain sizes are created by quenching from the paraelectric phase by biasing the initial conditions. Three different two-dimensional microstructures with different sizes of the $90^{o}$ domains are simulated. An electric field is applied along the polar as well as non-polar directions and the piezoelectric response is simulated as a function of domain size for both cases. The simulations show that the piezoelectric coefficients are enhanced by reducing the domain size, consistent with recent experimental results of Wada and Tsurumi (Brit. Ceram. Trans. {\bf 103}, 93, 2004) on domain engineered $BaTiO_{3} $

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