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Updated: May 30, 2026

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
Published on: March 27, 2018
Lattice distortion under an electric field in BaTiO(3) piezoelectric single crystal
Ryoko Tazaki1, Desheng Fu, Mitsuru Itoh
1Exploratory Research for Advanced Technology (ERATO), Japan Science and Technology Agency (JST), 3-5 Sanbanchou, Chiyoda-ku, Tokyo 102-0075, Japan.
Abstract:
Lattice distortions under an electric field in a mono-domain of BaTiO(3) ferroelectric crystal have been detected with synchrotron x-ray radiation. The variation of the lattice constant with an electric field observed with high angle diffraction shows a linear response nature of the piezoelectric effect. When an electric field is applied along the spontaneous polarization direction, the c-axis of the lattice elongates and the a-axis of the lattice shrinks at a rate of d(33) = 149 ± 54 pm V(-1) and d(31) = -82 ± 61 pm V(-1); these represent the longitudinal and transverse piezoelectric coefficients of BaTiO(3) crystal, respectively. These results give an insight into the intrinsic piezoelectric response on the lattice scale in BaTiO(3) that has been widely used to explore high performance lead-free piezoelectric alloys.
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