Microstructure and Electric Properties of Dy and Sm-Doped Bismuth Titanate Ceramics

摘要：

The effect of Dy and Sm doping on microstructure and electric properties of bismuth titanate ceramics were investigated by means of XRD, SEM and AFM. The results showed that the grain growth habit was anisotropy of BIT ceramics doped with Dy, Sm at a concentration range of 0.5％~2.5％. However, c-axis decreased more obviously with increasing dopant concentration of Sm-doped sample than Dy-doped sample. As a result, the shape of grains of Sm-doped sample were granular, in contrast with Dy-doped sample with template particles. The grain size of Sm- doped sample decreased significantly, which led to a large dielectric constant and remanent polarization.

关键词： Dy and Sm doping BIT ceramics electric properties rare earths

作者: Pu Yongping(蒲永平) Wang Jinfei(王瑾菲) Yang Wenhu(杨文虎) Yang Gongan(杨公安) Liang Yunhe(梁云鹤)

作者单位: School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xian 710021, China

会议类型: 国际会议

会议名称: 第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)

会议地点: 包头

会议语种:英文

页码: 432-435

在线出版日期: 2007-08-07（万方平台首次上网日期，不代表论文的发表时间）