Strain-Induced Structural Phase Transition and its Effect on Piezoelectric Properties of (BZT-BCT)-(CeO2) Ceramics

被引：45

作者：

Chandrakala, Elugu ^{[1
]}

Praveen, John Paul ^{[1
]}

Kumar, Ajeet ^{[2
]}

James, Ajit R. ^{[2
]}

Das, Dibakar ^{[1
]}

机构：

[1] Univ Hyderabad, Sch Engn Sci & Technol, Hyderabad 500046, Andhra Pradesh, India

[2] Def Met Res Lab, Ceram & Composites Grp, Hyderabad 500058, Andhra Pradesh, India

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2016年 / 99卷 / 11期

关键词：

lead-free ceramics; strain; piezoelectric properties; dielectric properties; LEAD-FREE CERAMICS; FREE PIEZOCERAMICS; TEMPERATURE; COEFFICIENT; BATIO3;

D O I：

10.1111/jace.14409

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：

A strain-induced structural phase transition and its subsequent effect on the piezoelectric properties of BZT-BCT-x CeO2 (x=0-0.1wt%) ceramics have been reported in this manuscript. BZT-BCT-xwt% CeO2 lead-free piezoceramics were successfully been prepared using sol-gel method. X-ray diffraction spectra of BZT-BCT-xwt% CeO2 (x=0-0.10wt%) ceramics showed a purely single-phase perovskite structure and a change in crystal structure between tetragonal and rhombohedral phases with increasing CeO2 content. The strain-induced structural phase transition has resulted in excellent piezoelectric properties, d(33)=673 pC/N, k(p) 56%, and T-c=110 degrees C for BZT-BCT-0.08wt% CeO2 ceramics. Greatly improved temperature stability of the piezoelectric properties has been observed over a temperature range between 20 degrees C and 90 degrees C. The ferroelectric-paraelectric transition temperature, T-c obtained in this study is 17 degrees C higher than those reported earlier.

引用

页码：3659 / 3669

页数：11

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