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

A strain‐induced structural phase transition and its subsequent effect on the piezoelectric properties of BZT‐BCT–x CeO2 (x = 0–0.1 wt%) ceramics have been reported in this manuscript. BZT‐BCT–x wt% CeO2 lead‐free piezoceramics were successfully been prepared using sol–gel method. X‐ray diffraction...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2016-11, Vol.99 (11), p.3659-3669
Main Authors: Chandrakala, Elugu, Paul Praveen, John, Kumar, Ajeet, James, Ajit R., Das, Dibakar
Format: Article
Language:English
Subjects:
Ceramics
Crystal structure
Dielectric properties
Diffraction
lead-free ceramics
Phase transformations
Phase transitions
piezoelectric properties
Piezoelectricity
Spectra
strain
Transition temperature
X-rays
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Summary:A strain‐induced structural phase transition and its subsequent effect on the piezoelectric properties of BZT‐BCT–x CeO2 (x = 0–0.1 wt%) ceramics have been reported in this manuscript. BZT‐BCT–x wt% CeO2 lead‐free piezoceramics were successfully been prepared using sol–gel method. X‐ray diffraction spectra of BZT‐BCT–x wt% CeO2 (x = 0–0.10 wt%) 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, d33 = 673 pC/N, kp ~ 56%, and Tc = 110°C for BZT‐BCT–0.08 wt% CeO2 ceramics. Greatly improved temperature stability of the piezoelectric properties has been observed over a temperature range between 20°C and 90°C. The ferroelectric–paraelectric transition temperature, Tc obtained in this study is 17°C higher than those reported earlier.
ISSN:0002-7820
1551-2916
DOI:10.1111/jace.14409