Preparation and improvement in the electrical properties of lead-zinc-niobate-based ceramics by thermal treatments

被引：38

作者：

Fan, HQ ^{[1
]}

Park, GT ^{[1
]}

Choi, JJ ^{[1
]}

Ryu, J ^{[1
]}

Kim, HE ^{[1
]}

机构：

[1] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151742, South Korea

来源：

JOURNAL OF MATERIALS RESEARCH | 2002年 / 17卷 / 01期

关键词：

D O I：

10.1557/JMR.2002.0027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The piezoelectric and dielectric properties of Pb(Zn1/3Nb2/3)O-3 (PZN)-based ceramics were investigated. The perovskite structure of PZN ceramics was stabilized by the addition of Pb(Zn0.47Ti0.53)O-3 (PZT). The highest piezoelectric properties were observed for the composition of 0.5PZN-0.5PZT, which lies on the two-phase zone of morphotropic phase boundary. For further improvements in electric properties. the specimens were thermally treated in a flowing O-2 atmosphere at temperatures ranging from 860 to 1030 degreesC. The thermal treatment eliminated the PbO-rich amorphous intergranular layer by lead evaporation. As a result of this improvement in structure, the dielectric constant (epsilon'), the piezoelectric coefficient (d(33)), and the electromechanical coupling factor (k(p)), were enhanced markedly after thermal annealing at 960 degreesC for 8 h in an O-2 atmosphere.

引用

页码：180 / 185

页数：6

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