Domain Wall Engineering in Lead-Free Piezoelectric Grain-Oriented Ceramics

Abstract

Abstract [110]-oriented barium titanate (BaTiO3) ceramics were prepared by templated grain growth (TGG) method. As a result, BaTiO3-grain-oriented ceramics with a high density of more than 96% were successfully prepared despite various degrees of orientation along the [110] direction, F 110 values, from 0 to 98%. The d 31 values were almost constant at −50 pC/N despite various F 110 values, while the d 33 values increased with increasing F 110 values, and at around an F 110 of 85%, d 33 reached a maximum of 788 pC/N. Keywords: Barium titanategrain-oriented ceramicsengineered domain configurationpiezoelectric propertytemplated grain growth method Acknowledgments We would like to thank Mr. Yasuhiro Matsumoto and Mr. Yuici Yamamoto of Konoshima Chemical Co., Ltd., for preparing the [110] oriented BaTiO3 platelike particles. We would also like to thank Mr. Kazuomi Abe of Sakai Chemical Industry Co., Ltd., for providing high purity BT-01, BT-03, and BT-05 powders. This study was partly supported by (1) a Grant-in-Aid for Scientific Research (16656201 and 18360312) 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. Notes *Measured using [110] poled BaTiO3 single-domain crystal.