Low-temperature sintering and electrical properties of Sr2Nb2O7 piezoceramics by CuO addition

被引：19
|
作者：
Chen, Tao [1 ,2 ,3 ]
Liang, Ruihong [1 ]
Jiang, Kai [4 ]
Hu, Zhigao [4 ]
Zhou, Zhiyong [1 ]
Dong, Xianlin [1 ]
机构：
[1] Chinese Acad Sci, Key Lab Inorgan Funct Mat & Devices, Shanghai Inst Ceram, Shanghai, Peoples R China
[2] ShanghaiTech Univ, Shanghai, Peoples R China
[3] Univ Chinese Acad Sci, Beijing, Peoples R China
[4] East China Normal Univ, Dept Elect Engn, Key Lab Polar Mat & Devices, Minist Educ, Shanghai, Peoples R China
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2017年 / 100卷 / 06期
基金：
中国国家自然科学基金;
关键词：
densification; electrical properties; layered ceramics; materials; properties; piezoelectric; PIEZOELECTRIC PROPERTIES; DIELECTRIC-PROPERTIES; CERAMICS; SUBSTITUTION; TUNGSTEN; NIOBATE;
D O I：
10.1111/jace.14797
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Effects of 0.5 wt% CuO addition on the sintering, structural and electrical properties of perovskite layer structured (PLS) Sr2Nb2O7 ceramics prepared by solid-state reaction method are investigated. The addition of CuO is beneficial to the liquid phase bridge formation at sintering process, leading to lower sintering temperature of 1180 degrees C and larger bulk density up to 98%. Meanwhile, CuO modified Sr2Nb2O7 ceramics show a remarkable d(33) of (1.1 +/- 0.1) pC/N while still with a very high T-c of (1340 +/- 2)degrees C. Raman spectra indicate that the improvement of piezoelectricity could be attributed to the rotation and/or distortion of oxygen octahedron caused by possible Cu2+ substitution at the A-sites of Sr2Nb2O7.
引用
收藏
页码：2397 / 2401
页数：5
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