Electrical Behaviors of Bi2WTi3O12 Ceramics

摘要：

Bi2WTi3O12 ceramics are fabricated by conventional solid-state reaction process. XRD analysis reveals that Bi2WO6 is the main phase and Bi4Ti3O12 is the second phase. With increasing temperature the sample first appears metallic behavior, then strong electrical fluctuations above 100℃, and finally exhibits stable nonlinear properties characterized by semiconductivity above 300℃ at low field (E≤100V/mm). The Arrhenius law for electrical conductivity by thermal activation is not suitable to explain the anomalous results. Based on the phase transition of tungsten trioxide from room temperature to about 300℃, the electrical properties of Bi2WTi3O12 ceramics can be explained.

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

作者单位: School 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: 238-241

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）