Enhanced Piezoelectric Property of Barium Titanate Single Crystals by Domain Wall Engineering Using Patterning Electrode

Abstract

Abstract For the [111] oriented barium titanate (BaTiO3) single crystals, the patterning electrode was used to induce the finer engineered domain configurations with domain size below 5 μ m. The poling treatment was performed at 134.0°C under electric fields below 6 kV/cm to inhibit the burning of the patterning electrode with photoresist. As the results, the gradient domain sizes from 3 μm (high voltage side) to 8–9 μ m (ground side) were induced into the 31 resonator along thickness direction. For this resonator, the d31 was measured at −243.2 pC/N using a resonance-antiresonance method. Keywords: Barium titanatedomain engineeringdomain wall Acknowledgments We would like to thank Mr. O. Nakao of Fujikura Ltd. for preparing the TSSG-grown BaTiO3 single crystals with excellent chemical quality. This study was partially supported by (1) a Grant-in-Aid for Scientific Research (16656201) from the Ministry of Education, Culture, Sports, Science, and Technology, Japan, (2) the Japan Securities Scholarship Foundation, (3) the Toray Science Foundation, (4) the Kurata Memorial Hitachi Science and Technology Foundation, (5) the Electro-Mechanic Technology Advanced Foundation, (6) the Tokuyama Science Foundation and (7) the Yazaki Memorial Foundation for Science and Technology.