Origin of The Cubic-to-Hezagonal Phase Transition in The Ba2NiWO6-BaTiO3 System

摘要：

Microwave dielectric ceramics with the composition of (1-x)Ba(Ni1/2W1/2)O3-xBaTiO3 (x=0.1- 0.5) were prepared by a solid-state reaction method. A cubic-to-hexagonal phase transition occurred from x=0.15 to 0.5, where the cubic double perovskite structure transformed into the h-BaTiO3-type hexagonal perovskite structure. In this paper, we revealed a cluster model caused by a hopping mechanism as the origin of the cubic-to-hexagonal phase transition on the basis of the low frequency dielectric property results. This model was then proved by XRD analysis, XPS analysis, and HRTEM and EDS techniques, respectively.

作者: Fei Zhao Zhenxing Yue Li Zhang Zhilun Gui Longtu Li

作者单位: State Key Laboratory of New Ceramics and Fine Processing,Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,P.R.China

会议类型: 国际会议

会议名称: 2009 The 18th IEEE International Symposium on Applications of Ferroelectrics(2009年国际铁电学暨IEEE国际铁电应用联合会议)

会议地点: 西安

会议语种:英文

页码: 47-50

在线出版日期: 2009-08-23（万方平台首次上网日期，不代表论文的发表时间）