Study on Dielectric and Ferroelectric Properties of Gd-Doped Sr2Bi4Ti5O18 Ceramics

摘要：

Lead-free piezoelectric ceramics Sr2Bi4Ti5O18 were prepared by conventional solid-state reaction method. Pure bismuth layered structural ceramics with uniform gain size were obtained in all samples. The effect of Gd-doping on the dielectric, ferroelectric and piezoelectric properties of Sr2Bi4Ti5O18 ceramics were also investigated. It was found that that Gd3+ dopant gradually decreased the Curie temperature (Fc) with the lower dielectric loss (tanδ) of SBTi ceramics. In addition, Gd-doping with appropriate content improved the ferroelectric and piezoelectric properties of the SBTi ceramics. The piezoelectric constant (d33) of the Sr2Bi4Ti5O18 ceramic reached the maximum value, which is 22 pC/N. The results showed that the Sr2Bi4Ti5O18 ceramic was a promising lead-free piezoelectric material.

关键词： Sr2Bi4Ti5O18 Dielectric properties Piezoelectric properties Ferroelectric properties

作者: Qian Chen Zhi Jun Xu Rui Qing Chu Yong Liu Ming Li Chen Xiu Hui Wang Chun Jiao Ran Guo Rong Li

作者单位: College of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, China The State Key Lab of High Performance Ceramics and Superfinemicrostructure, Shanghai Institute of Ce

会议类型: 国际会议

会议名称: 2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)

会议地点: 广州

会议语种:英文

页码: 1131-1134

在线出版日期: 2011-11-18（万方平台首次上网日期，不代表论文的发表时间）