Dielectric, Ferroelectric, and Piezoelectric Properties of Bi(Ni1/2Ti1/2)O3-Modified BiFeO3-BaTiO3 Ceramics with High Curie Temperature

被引：92

作者：

Zhou, Qin ^{[1
]}

Zhou, Changrong ^{[1
]}

Yang, Huabin ^{[1
]}

Chen, Guohua ^{[1
]}

Li, Weizhou ^{[2
]}

Wang, Hua ^{[1
]}

机构：

[1] Guilin Univ Elect Technol, Guangxi Key Lab Informat Mat, Guilin 541004, Guangxi, Peoples R China

[2] Guangxi Univ, Sch Mat Sci & Engn, Nanning 530004, Guangxi, Peoples R China

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2012年 / 95卷 / 12期

关键词：

SIZE;

D O I：

10.1111/j.1551-2916.2012.05387.x

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：

New piezoelectric ceramics, 0.71BiFe1-x(Ni1/2Ti1/2)x O3-0.29BaTiO3+0.6 wt% MnO2 [BFNTxBT] (x = 00.09), were fabricated using conventional mixed-oxide method. It was found that the introduction of BNT into BF-BT system caused insignificant change in crystal structure, which is a single-phase perovskite structure. However, an obvious variation in microstructure took place. The ceramics with composition of x = 0.03 showed enhanced piezoelectric, electromechanical, and ferroelectric properties with piezoelectric constant d33 = 156 pC/N, planar electromechanical coupling factors kp = 0.308, remnant polarization Pr = 22.5 mu C/cm2, and coercive field Ec = 28.2 kV/cm, with a high Curie temperature Tc = 431 degrees C, respectively. The combination of good piezoelectric properties and high Tc makes these ceramics suitable for elevated temperature piezoelectric devices.

引用

页码：3889 / 3893

页数：5

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