Doping effects on the piezoelectric properties of low-temperature sintered PbTiO3-based ceramics for SAW applications

被引：5

作者：

Chen, TY ^{[1
]}

Chu, SY ^{[1
]}

Cheng, CK ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Elect Engn, Tainan 70101, Taiwan

来源：

INTEGRATED FERROELECTRICS | 2003年 / 58卷

关键词：

ceramics; sintering temperature; piezoelectricity; SAW;

D O I：

10.1080/10584580390259641

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The Sm-modified lead titanate ceramics with a composition of (Pb0.85Sm0.1) (Ti-0.98 Mn-0.02)O-3 piezoceramics, doped and undoped with BiFeO3 (BF) and Ba(Cu0.5W0.5)O-3 (BCW) oxides, were prepared by conventional mixed-oxide method, using sintering temperature at 1075degreesC and 1100degreesC. Microstructural and compositional analyses of the PbTiO3 -based ceramics have been carried out using XRD and SEM. The effects of dopants on the sintering temperature and piezoelectric properties of the ceramics have been investigated. We successfully showed that these additives were helpful in lowering of the sintering temperature and still keep high thickness electromechanical coupling coefficient, k(t) , and small planar electromechanical coupling coefficient, k(p) . Surface acoustic wave (SAW) filters were fabricated and the phase velocities were measured.

引用

页码：1315 / 1324

页数：10

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