PiezoelectricPropertiesof(Na0.5K0.5-xLix)NbO3Ceramics

被引：0

作者：

Peng QI Jinfeng WANG Baoquan MING Juan DU Xinghua LIANG Limei ZHENG School of PhysicsShandong UniversityJinan China ^{[250100
]}

机构：

来源：

Journal of Materials Science & Technology | 2007年 / 06期

关键词：

Lead-free; Piezoelectric; Dielectric; Morphotropic phase boundary;

D O I：

暂无

中图分类号：

TM282 [压电陶瓷材料];

学科分类号：

0805 ; 080502 ; 080801 ;

摘要：

<正>Lead-free piezoelectric ceramics(Na0.5K0.5-xLix)NbO3（x=0.057-0.060）were synthesized by an ordinary sin- tering technique.Substituting Li for K can lead to structural distortion,which improves the Curie temperature （TC）greatly.By adding appropriate LiNbO3 content,piezoelectric constant d33values reach 202-212 pC/N. Electromechanical coefficients of the planar mode reach 44.4%-46.8%.The dielectric loss is below 2.6%, which is much lower than reported（about 50%）.The To of(Na0.5K0.5-xLix)NbO3（x=0.057-0.066）is in the range of 490-510℃,at least 70℃higher than that of pure(Na0.5K0.5)NbO3 ceramics.The results show that(Na0.5K0.5-xLix)NbO3 ceramic is a kind of good lead-free high-temperature piezoelectric material.

引用

页码：833 / 836

页数：4