标题：High piezoelectric properties of batio3ceramics prepared by two-step sintering technique through conventional solid-state reaction route
作者：Tan, Yong-Qiang ;Zhang, Jia-Liang ;Zhang, Zong ;Wang, Chun-Lei
作者机构：[Tan, Yong-Qiang ;Zhang, Jia-Liang ;Zhang, Zong ;Wang, Chun-Lei ] School of Physics, State Key Laboratory of Crystal Materials, Shandong University, J 更多
会议名称：2011 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications, SPAWDA 2011
会议日期：December 9, 2011 - December 11, 2011
来源：Proceedings of the 2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications, SPAWDA 2011
摘要：A two-step sintering technique was attempted to acquire BaTO3 ceramics with dense and small-grained microstructure through conventional solid-state reaction route, in which BaCO3 and TiO2 powders are adopted as the starting raw materials. It has been found that the two-step sintering technique is effective even for the synthesized BaTiO3powder of submicron-sized particles. A BaTiO3ceramic with relative density as high as 98.2% and small grain size of about 1.7 μm was successfully obtained. Its dielectric and piezoelectric properties were investigated and compared with those of the ordinarily-sintered BaTiO3ceramic under an optimized sintering condition. The ceramic prepared by the new technique shows high piezoelectric properties of d33= 390 pC/N and kp= 0.40 and is thus much superior to the ordinarily-sintered one, which displays only d33= 300 pC/N and kp= 0.32. The results demonstrate that fabricating BaTiO3ceramics with ideal microstructure and high piezoelectric properties at low cost is possible. © 2011 IEEE.