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Piezoelectric and ferroelectric properties of Ga modified BiFeO3–BaTiO3 lead-free ceramics with high Curie temperature

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Abstract

High-temperature 0.71 Bi(Fe1−x Ga x )O3–0.29 BaTiO3 (x = 0, 0.01, 0.015, 0.02, and 0.025) piezoelectric ceramics have been synthesized and their structure and electric properties have been investigated systemically. The Ga addition caused insignificant change of crystal structure. However, the addition of a small amount of Ga was quite effective to increase the grain size, densification, and piezoelectric properties. For the ceramics with x = 0.015, the maximum of piezoelectric constant (d 33), and electromechanical coupling factor (k p) are d 33 = 157 pC/N, k p = 0.326, respectively. Meanwhile, the increasing Curie temperature (T c), 467 °C, was obtained with x = 0.02 ceramics. Both remanent polarization P r and coercive field E c were reduced with increasing x.

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Acknowledgments

This work was supported by the National Nature Science Foundation of China (61261012, 61361007 and 11364008) and Guangxi Education Department Foundation (201012MS083) and Guangxi Key Laboratory of Information Materials (1210908-206-Z and 1210908-222-Z) and Guangxi Experiment Center of Information Science Foundation (LD13103X).

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Authors and Affiliations

  1. Guangxi Experiment Center of Information Science, Guilin University of Electronic Technology, Guilin, 541004, Guangxi, People’s Republic of China

    Qin Zhou & Huabin Yang

  2. Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin, 541004, Guangxi, People’s Republic of China

    Qin Zhou, Changrong Zhou, Huabin Yang, Changlai Yuan, Guohua Chen, Lei Cao & Qiaolan Fan

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  1. Qin Zhou
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  2. Changrong Zhou
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  3. Huabin Yang
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Correspondence to Changrong Zhou.

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Zhou, Q., Zhou, C., Yang, H. et al. Piezoelectric and ferroelectric properties of Ga modified BiFeO3–BaTiO3 lead-free ceramics with high Curie temperature. J Mater Sci: Mater Electron 25, 196–201 (2014). https://doi.org/10.1007/s10854-013-1573-8

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  • DOI: https://doi.org/10.1007/s10854-013-1573-8

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