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

页码：2397 / 2401

页数：5

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