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Structure and electrical properties of (1 − x)(Na0.5Bi0.5)0.94Ba0.06TiO3–xSmAlO3 lead-free piezoelectric ceramics

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Abstract

(1 − x)(Na0.5Bi0.5)0.94Ba0.06TiO3–xSmAlO3 [(1 − x)BNBT6–xSA] lead-free piezoelectric ceramics were synthesized by conventional solid-state method. Effects of composition on the micro-structure and electrical properties of (1 − x)BNBT6–xSA ceramics were investigated. X-ray diffraction data shows that (1 − x)BNBT6–xSA ceramics form the pure perovskite phases, and the ceramics have the morphotropic phase boundary when x ≤ 0.0100. At room temperature, the electrical properties of the BNBT6 ceramics have been improved with the addition of appropriate SA. At room temperature, (1 − x)BNBT6–xBA ceramics at x = 0.0100 has the highest remnant polarization (P r = 47 μC/cm2), the highest piezoelectric coefficient (d 33 = 179 pC/N), the highest planar coupling factor (k p = 0.296), the higher dielectric constant (ɛ r = 1154) and higher mechanical quality factor (Q m = 131).

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Acknowledgments

This work was supported by the National High Technology Research and Development Program of China (No. 2013AA030801), National Natural Science Foundation of China (No. 51372110), the Natural Science Foundation of Shandong Province of China (No. ZR2012EMM004).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Liaocheng University, Liaocheng, 252059, People’s Republic of China

    Peng Fu, Zhijun Xu, Ruiqing Chu, Wei Li & Jigong Hao

  2. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People’s Republic of China

    Peng Fu

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  1. Peng Fu
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Correspondence to Peng Fu.

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Fu, P., Xu, Z., Chu, R. et al. Structure and electrical properties of (1 − x)(Na0.5Bi0.5)0.94Ba0.06TiO3–xSmAlO3 lead-free piezoelectric ceramics. J Mater Sci: Mater Electron 26, 122–127 (2015). https://doi.org/10.1007/s10854-014-2372-6

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