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Characterization of ternary (Na0.5K0.5)1−x Li x NbO3 lead-free piezoelectric ceramics prepared by molten salt synthesis method

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Abstract

(Na0.5K0.5)1−x Li x NbO3 powders and ceramics were prepared by molten salt synthesis method. Pure perovskite-phase powder was obtained at a low temperature of 740 °C with a grain size of below 800 nm. The effects of the LiNbO3 on phase transition, microstructure, electrical properties, and temperature stability were investigated. A morphotropic phase boundary was identified. The scanning electron microscopy indicated that the (Na0.5K0.5)1−x Li x NbO3 powders and ceramics obtained by the molten salt synthesis method have a relatively uniform particle size and microstructure. The results indicate that these materials are promising candidates for lead-free piezoelectric ceramics for practical applications.

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  1. Department of Research and Development, Chinese People’s Armed Police Force Academy, Xihuang Street, No. 220, Langfang, 065000, Hebei, China

    Li Jianhua

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  1. Li Jianhua
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Correspondence to Li Jianhua.

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Jianhua, L. Characterization of ternary (Na0.5K0.5)1−x Li x NbO3 lead-free piezoelectric ceramics prepared by molten salt synthesis method. J Mater Sci 46, 6364–6370 (2011). https://doi.org/10.1007/s10853-011-5583-8

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