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Excellent thermal-cycling stability caused by aging in Fe-doped (Ba0.85Ca0.15)(Ti0.9Zr0.1)O3 lead-free piezoceramic
A key challenge for the practical application of lead-free piezoelectrics is how to acquire high-piezoelectricity and good thermal-cycling stability simultaneously. Here, we report that excellent thermal-cycling stability was obtained in aged (Ba0.85Ca0.15)(Ti0.9Zr0.1)99.75/100Fe0.25/100O3-δ lead-fr...
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Published in: | Scripta materialia 2021-09, Vol.202, p.113990, Article 113990 |
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description | A key challenge for the practical application of lead-free piezoelectrics is how to acquire high-piezoelectricity and good thermal-cycling stability simultaneously. Here, we report that excellent thermal-cycling stability was obtained in aged (Ba0.85Ca0.15)(Ti0.9Zr0.1)99.75/100Fe0.25/100O3-δ lead-free piezoceramic with high-piezoelectricity (d33 ~ 400 pC/N). No piezoelectricity degradation was found for the aged sample after 100 thermal cycles between -40 °C and 50 °C. Further studies on hysteresis loop and evolution of microstructures reveal that the excellent thermal-cycling stability is related to the point-defect migration during aging. This work indicates that aging is an effective way to obtain good thermal-cycling stability and high-piezoelectricity simultaneously.
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doi_str_mv | 10.1016/j.scriptamat.2021.113990 |
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subjects | Aging Lead-free Piezoelectric Thermal cycling stability |
title | Excellent thermal-cycling stability caused by aging in Fe-doped (Ba0.85Ca0.15)(Ti0.9Zr0.1)O3 lead-free piezoceramic |
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