Dielectric and piezoelectric properties of nonstoichiometric SrBi2Ta2O9 and SrBi2Nb2O9 ceramics

被引：17

作者：

Cho, JA

Park, SE

Song, TK ^{[1
]}

Kim, MH

Lee, HS

Kim, SS

机构：

[1] Changwon Natl Univ, Dept Ceram Sci & Engn, Chang Won 641773, Kyongnam, South Korea

[2] Changwon Natl Univ, Dept Phys, Chang Won 641773, Kyongnam, South Korea

来源：

JOURNAL OF ELECTROCERAMICS | 2004年 / 13卷 / 1-3期

关键词：

bi-layered perovskite; Curie temperature; electromechanical factor; mechanical quality factor;

D O I：

10.1007/s10832-004-5150-7

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：

Nonstoichiometric SrBi2Ta2O9 (SBT) and SrBi2Nb2O9 (SBN) ceramics were prepared by a solid state reaction method. X-ray diffraction analysis showed that single-phase of Bi-layered perovskite was obtained. With different Sr/Bi content ratios of SBT and SBN, Curie temperature (T-C), electromechanical factor (K-p) and mechanical quality factor (Q(m)) were measured. T-C of SBN (SBT) rose from 414degreesC (314degreesC) to 494degreesC (426degreesC) when Sr/Bi content ratio was increased from 0.55/2.3 to 1.2/1.8. In the most Sr-deficient/Bi-excess ratio of 0.55/2.3, the maximum values of Q(m) were obtained approximately 1013 and 3325 for SBT and SBN, respectively.

引用

页码：515 / 518

页数：4

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