Influence of tetragonality and secondary phase on the Curie temperature for barium titanate ceramics

被引：11

作者：

Tang, Bin ^{[1
]}

Zhang, Shu-Ren ^{[1
]}

Yuan, Ying ^{[1
]}

Yang, Lin-Bo ^{[1
]}

Zhou, Xiao-Hua ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2008年 / 19卷 / 11期

关键词：

D O I：

10.1007/s10854-007-9477-0

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The effects of tetragonality and secondary phase on the Curie point of barium titanate (BaTiO3) ceramics were investigated in BaTiO3-MnNb2O6 system using differential scanning calorimetry (DSC), X-ray diffraction (XRD) and scanning electron microscope (SEM). In the case of MnNb2O6 addition up to 0.50 mol%, the Curie point decreased as the room temperature tetragonality decreased. With MnNb2O6 content greater than 1.00 mol%, a secondary phase Ba2Ti3Nb4O18 was formed, resulting in a shift of the Curie point towards higher temperatures. The chemical defect reaction and the internal stress effect on the Curie point have also been discussed.

引用

页码：1109 / 1113

页数：5

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