Lead-free piezoelectric ceramics of (Bi1/2Na1/2)TiO3-KNbO3-1/2(Bi2O3•Sc2O3) system

被引：78

作者：

Nagata, H ^{[1
]}

Takenaka, T ^{[1
]}

机构：

[1] Sci Univ Tokyo, Fac Sci & Technol, Noda, Chiba 278, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1998年 / 37卷 / 9B期

关键词：

piezoelectric ceramics; lead-free; bismuth sodium titanate; (Bi1/2Na1/2)TiO3; electromechanical coupling factor;

D O I：

10.1143/JJAP.37.5311

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Bismuth sodium titanate, (Bi1/2Na1/2)TiO3 (BNT)-based solid solution, a(Bi1/2Na1/2)TiO3-bKNbO(3)-c1/2(Bi2O3.Sc2O3) (a + b + c = 1), [KTNS(100a/100b/100c)], was studied for its dielectric, ferroelectric and piezoelectric properties, as a new group of lead-free piezoelectric ceramics. Electrical measurements such as dielectric and piezoelectric properties show that the KTNS(100a/100b/100c) ceramics near the BNT side have a relatively high electromechanical coupling factor. k(33) (=0.47). On particular, the amount of modified Bi ions has an effect on k(33). These ceramics seem to be a candidate for lead-free piezoelectric ceramics.

引用

页码：5311 / 5314

页数：4

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