Ferroelectric Properties and Microstructures of Dy2O3-doped Bi4Ti3O12 Ceramics

摘要：

The electrical properties of Dy-doped bismuth titanate, Bi4-xDyxTi3O12(BDT) ceramics prepared by a conventional electroceramic technique have been investigated. XRD analyses revealed Bi-layered perovskite structure in all samples, and indicted that Bi ions were only substituted near the Ti-O octahedron layers by Dy ions. SEM micrographs show randomly oriented and plate-like morphology. The remanent polarization (Pr) and coercive field (Ec) of the BDT ceramic with x=0.75 were above 19μC/cm2 and 50KV/cm, respectively. The large value of remanent polarization and low coercive field of Dy-doped bismuth titanate ceramics promote these materials to potential applications.

作者: J.Liu M.Chen X.A.Mei Y.H.Sun C.Q.Huang

作者单位: School of Information and Communication Engineering, Hunan Institute of Science and Technology, Yuey Department of physics, Hunan Institute of Science and Technology, Yueyang, 414000, China

会议类型: 国际会议

会议名称: The Second Annual Meeting on Testing and Evaluation of Inorganic Mateirals(第二届全国无机材料测试与评价学术年会 TEIM-2)

会议地点: 长沙

会议语种:英文

页码: 226-229

在线出版日期: 2011-06-30（万方平台首次上网日期，不代表论文的发表时间）