Polymorphic phase transition and enhanced piezoelectric properties in (Ba0.9Ca0.1)(Ti1-xSnx)O3 lead-free ceramics

被引：55

作者：

Chen, Mingli ^{[1
]}

Xu, Zhijun ^{[1
]}

Chu, Ruiqing ^{[1
]}

Liu, Yong ^{[1
]}

Shao, Lin ^{[1
]}

Li, Wei ^{[1
]}

Gong, Shuwen ^{[2
]}

Li, Guorong ^{[3
]}

机构：

[1] Liaocheng Univ, Coll Mat Sci & Engn, Liaocheng 252059, Peoples R China

[2] Liaocheng Univ, Coll Chem & Chem Engn, Liaocheng 252059, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China

来源：

MATERIALS LETTERS | 2013年 / 97卷

基金：

国家高技术研究发展计划(863计划);

关键词：

PPT; Electrical properties; Piezoelectric materials; Lead-free; Diffuse phase transition;

D O I：

10.1016/j.matlet.2012.12.067

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Lead-free (Ba0.9Ca0.1)(Ti1-xSnx)O-3 (BCTS) (x=0.02-0.1) ceramics were fabricated using conventional solid state reaction method. The effects of Sn substitution on structure and electrical properties of the BCTS ceramics were researched. At room temperature, a polymorphic phase transition (PPT) from tetragonal phase to rhombohedral phase is identified from XRD patterns with increasing Sn content. High piezoelectric coefficient of d(33)=405 pC/N and planar mode electromechanical coupling factor of k(p)=43.2% are obtained for the sample at x=0.06. The ceramic for x=0.06 also shows uniform microstructure that contributes to the excellent electrical properties. These results indicate that this BCTS system with optimal composition is a promising lead-free piezoelectric material. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：86 / 89

页数：4

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