0.75(Bi1/2Na1/2)TiO3-0.20(Bi1/2K1/2)TiO3-0.05BaTiO3 lead-free ceramics with addition of CeO2

被引：8

作者：

Choy, S. H. ^{[1
]}

Wang, X. X.

Chan, H. L. W.

Choy, C. L.

机构：

[1] Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China

[2] Hong Kong Polytech Univ, Mat Res Ctr, Kowloon, Hong Kong, Peoples R China

来源：

FERROELECTRICS | 2006年 / 336卷

关键词：

lead-free ceramics; bismuth sodium titanate; piezoelectricity; depolarization temperature;

D O I：

10.1080/00150190600695784

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Lead-free piezoelectric 0.75(Bi1/2Na1/2)TiO3-0.20(Bi1/2K1/2)TiO3-0.05BaTiO(3) ceramics( abbreviated as BNKBT-20) with addition of 0.2, 0.4, 0.6 and 0.8 wt% of CeO2, respectively, were prepared by a conventional mixed oxide method. The addition of CeO2 can reduce the dissipation factor and enhance the mechanical quality factor significantly. The composition with 0.4 wt% CeO2 has a piezoelectric d(33) constant of 129 x 10(-12) C/N and a relatively low dissipation factor (tan delta = 1.8%) at 1 kHz which shows a 50% reduction in the dissipation factor when compared with BNKBT-20 before doping (tan delta = 3.74%).

引用

页码：69 / 79

页数：11

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