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Title: Semiconductor/relaxor 0–3 type composites without thermal depolarization in Bi 0.5Na 0.5TiO 3-based lead-free piezoceramics

Abstract

Commercial lead-based piezoelectric materials raised worldwide environmental concerns in the past decade. Bi 0.5Na 0.5TiO 3-based solid solution is among the most promising lead-free piezoelectric candidates; however, depolarization of these solid solutions is a longstanding obstacle for their practical applications. Here we use a strategy to defer the thermal depolarization, even render depolarization-free Bi 0.5Na 0.5TiO 3-based 0–3-type composites. This is achieved by introducing semiconducting ZnO particles into the relaxor ferroelectric 0.94Bi 0.5Na 0.5TiO 3–0.06BaTiO 3 matrix. The depolarization temperature increases with increasing ZnO concentration until depolarization disappears at 30 mol% ZnO. The semiconducting nature of ZnO provides charges to partially compensate the ferroelectric depolarization field. These results not only pave the way for applications of Bi 0.5Na 0.5TiO 3-based piezoceramics, but also have great impact on the understanding of the mechanism of depolarization so as to provide a new design to optimize the performance of lead-free piezoelectrics.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
USDOE
OSTI Identifier:
1353245
Resource Type:
Journal Article
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 6; Journal Issue: 03, 2015; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
ENGLISH
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Zhang, Ji, Pan, Zhao, Guo, Fei-Fei, Liu, Wen-Chao, Ning, Huanpo, Chen, Y. B., Lu, Ming-Hui, Yang, Bin, Chen, Jun, Zhang, Shan-Tao, Xing, Xianran, Rödel, Jürgen, Cao, Wenwu, and Chen, Yan-Feng. Semiconductor/relaxor 0–3 type composites without thermal depolarization in Bi0.5Na0.5TiO3-based lead-free piezoceramics. United States: N. p., 2015. Web. doi:10.1038/ncomms7615.
Zhang, Ji, Pan, Zhao, Guo, Fei-Fei, Liu, Wen-Chao, Ning, Huanpo, Chen, Y. B., Lu, Ming-Hui, Yang, Bin, Chen, Jun, Zhang, Shan-Tao, Xing, Xianran, Rödel, Jürgen, Cao, Wenwu, & Chen, Yan-Feng. Semiconductor/relaxor 0–3 type composites without thermal depolarization in Bi0.5Na0.5TiO3-based lead-free piezoceramics. United States. doi:10.1038/ncomms7615.
Zhang, Ji, Pan, Zhao, Guo, Fei-Fei, Liu, Wen-Chao, Ning, Huanpo, Chen, Y. B., Lu, Ming-Hui, Yang, Bin, Chen, Jun, Zhang, Shan-Tao, Xing, Xianran, Rödel, Jürgen, Cao, Wenwu, and Chen, Yan-Feng. Thu . "Semiconductor/relaxor 0–3 type composites without thermal depolarization in Bi0.5Na0.5TiO3-based lead-free piezoceramics". United States. doi:10.1038/ncomms7615.
@article{osti_1353245,
title = {Semiconductor/relaxor 0–3 type composites without thermal depolarization in Bi0.5Na0.5TiO3-based lead-free piezoceramics},
author = {Zhang, Ji and Pan, Zhao and Guo, Fei-Fei and Liu, Wen-Chao and Ning, Huanpo and Chen, Y. B. and Lu, Ming-Hui and Yang, Bin and Chen, Jun and Zhang, Shan-Tao and Xing, Xianran and Rödel, Jürgen and Cao, Wenwu and Chen, Yan-Feng},
abstractNote = {Commercial lead-based piezoelectric materials raised worldwide environmental concerns in the past decade. Bi0.5Na0.5TiO3-based solid solution is among the most promising lead-free piezoelectric candidates; however, depolarization of these solid solutions is a longstanding obstacle for their practical applications. Here we use a strategy to defer the thermal depolarization, even render depolarization-free Bi0.5Na0.5TiO3-based 0–3-type composites. This is achieved by introducing semiconducting ZnO particles into the relaxor ferroelectric 0.94Bi0.5Na0.5TiO3–0.06BaTiO3 matrix. The depolarization temperature increases with increasing ZnO concentration until depolarization disappears at 30 mol% ZnO. The semiconducting nature of ZnO provides charges to partially compensate the ferroelectric depolarization field. These results not only pave the way for applications of Bi0.5Na0.5TiO3-based piezoceramics, but also have great impact on the understanding of the mechanism of depolarization so as to provide a new design to optimize the performance of lead-free piezoelectrics.},
doi = {10.1038/ncomms7615},
journal = {Nature Communications},
issn = {2041-1723},
number = 03, 2015,
volume = 6,
place = {United States},
year = {2015},
month = {3}
}

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