Structure and properties of La-doping (Na0.5Bi0.5)TiO3 piezoelectric ceramics

被引：0

作者：

Chen Jianhua ^{[1
]}

Qu Shaobo ^{[1
,2
]}

Zhu Linhu ^{[1
]}

Pei Zhibin ^{[1
]}

Che Jun ^{[1
,2
]}

机构：

[1] AF Engn Univ, Xian 710038, Peoples R China

[2] Xi An Jiao Tong Univ, Xian 710049, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2007年 / 36卷

关键词：

lead free; bismuth sodium titanate; lanthanum doping;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Lanthanum doping (Na0.5Bi0.5) TiO3 ceramics was prepared by conventional technique. The structure, dielectric and piezoelectric properties were studied. It is found that lanthanum doping is advantageous to form perovskite structure, and modifies grains growth. Lanthanum doping (Na0.5Bi0.5) TiO3 ceramics is still a relax ferroelectric. When the amount of lanthanum is 5mol%, sintered at 1200 degrees C, the dielectric constant reaches 955, contrast to not modified (Na0.5Bi0.5) TiO3 ceramics' 630, while the loss tangent decreases from 5.5% to 3.3%. Lanthanum doping decreases the electrical conductivity of (Na0.5Bi0.5) TiO3 ceramics significantly. The optimum quantity is 1 mol%, when sintered at 1200 degrees C, and measured at 75 degrees C. The electrical conductivity of the samples is 7.75148 X 10(-13) S.cm(-1), only about 1/1000 of pure (Na0.5Bi0.5) TiO3 ceramics' 9.50827 X 10(-11) S.cm(-1).

引用

页码：539 / 542

页数：4

共 8 条

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