Enhanced piezoelectric properties of Nb and Mn co-doped CaBi4Ti4O15 high temperature piezoceramics

被引：67

作者：

Shen, Zong-Yang ^{[1
,2
]}

Sun, Huajun ^{[3
]}

Tang, Yanxue ^{[2
]}

Li, Yueming ^{[1
]}

Zhang, Shujun ^{[3
]}

机构：

[1] Jingdezhen Ceram Inst, Sch Mat Sci & Engn, Jiangxi Key Lab Adv Ceram Mat, Jingdezhen 333403, Peoples R China

[2] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

[3] Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2015年 / 63卷

基金：

中国国家自然科学基金;

关键词：

Ceramics; Piezoelectricity; Dielectric properties; BISMUTH TITANATE; ELECTRICAL-CONDUCTIVITY; CURIE-TEMPERATURE; CERAMICS; MICROSTRUCTURE; SUBSTITUTION; FAMILY;

D O I：

10.1016/j.materresbull.2014.11.055

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The properties of CaBi4Ti4O15 (CBT), CaBi4Ti3.95Nb0.05O15 (CBTN) and CaBi4Ti3.95Nb0.05O15 + 0.2 wt% MnO2 (CBTN-Mn) ferroelectric ceramics with bismuth layer structure were studied. Significant enhancement of piezoelectric coefficient was obtained for CBTN-Mn ceramics (d(33) = 23 pC/N), being nearly three times that of CBT counterpart (d(33) = 8 pC/N). Together with its high Curie temperature (T-c = 790 degrees C), low dielectric loss (tan delta = 0.2%), high resistivity (rho = 4.2 x 10(6) Omega cm at 500 degrees C) and good thermal stability up to 700 degrees C, the CBTN-Mn ceramic is a potential material for high temperature piezoelectric applications. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：129 / 133

页数：5

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