TY - JOUR
T1 - Enhanced piezoelectric properties of barium titanate single crystals with different engineered-domain sizes
AU - Wada, Satoshi
AU - Yako, Koichi
AU - Kakemoto, Hirofumi
AU - Tsurumi, Takaaki
AU - Kiguchi, Takanori
N1 - Funding Information:
We would like to thank O. Nakao of Fujikura Ltd. for preparing the TSSG-grown single crystals having excellent chemical quality. We would like to thank Dr. J. Erhart of ICPR, Technical University of Liberec for helpful discussion on the analysis of the domain configuration. We would also like to express our special thanks to Dr. L. E. Cross, Dr. T. R. Shrout, and Dr. S.-E. “Eagle” Park of Pennsylvania State University for giving us the opportunity to study the engineered-domain configurations. 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.
PY - 2005/7/1
Y1 - 2005/7/1
N2 - For tetragonal barium titanate (BaTiO3) single crystals, an electric field (E-field) applied along the [111]c direction can induce an engineered-domain configuration in these crystals. In this study, such engineered-domain configurations of different domain sizes were induced in BaTiO3 single crystals, and their piezoelectric properties were investigated as a function of domain size. Prior to this study, the dependences of the domain configuration on the temperature and E-field were investigated using a polarizing microscope in order to understand the optimum poling condition for fine- and coarse-domain configurations. We found that above the Curie temperature (TC) of 132.2 °C, when an E-field above 6.0 kVcm was applied along the [111]c direction, an engineered domain with a fine-domain configuration appeared. Moreover, it was also found that this fine-domain configuration remained stable at room temperature without the E-field. On the other hand, the coarse-domain configuration was obtained upon poling at just below TC. Finally, the piezoelectric properties of 31 resonators with different domain sizes of 40-5.5 μm were measured. As a result, it was found that the piezoelectric properties, such as d31 and k31, increased significantly with decreasing domain size.
AB - For tetragonal barium titanate (BaTiO3) single crystals, an electric field (E-field) applied along the [111]c direction can induce an engineered-domain configuration in these crystals. In this study, such engineered-domain configurations of different domain sizes were induced in BaTiO3 single crystals, and their piezoelectric properties were investigated as a function of domain size. Prior to this study, the dependences of the domain configuration on the temperature and E-field were investigated using a polarizing microscope in order to understand the optimum poling condition for fine- and coarse-domain configurations. We found that above the Curie temperature (TC) of 132.2 °C, when an E-field above 6.0 kVcm was applied along the [111]c direction, an engineered domain with a fine-domain configuration appeared. Moreover, it was also found that this fine-domain configuration remained stable at room temperature without the E-field. On the other hand, the coarse-domain configuration was obtained upon poling at just below TC. Finally, the piezoelectric properties of 31 resonators with different domain sizes of 40-5.5 μm were measured. As a result, it was found that the piezoelectric properties, such as d31 and k31, increased significantly with decreasing domain size.
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U2 - 10.1063/1.1957130
DO - 10.1063/1.1957130
M3 - Article
AN - SCOPUS:22944456536
VL - 98
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 1
M1 - 014109
ER -