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Piezoelectric properties of [(K1−x Na x )0.95Li0.05]0.985Ca0.015(Nb0.95Sb0.05)0.985Ti0.015O3 lead-free ceramics

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Abstract

In this paper, we have investigated the effect of K/Na ratio on the electrical properties of [(K1−x Na x )0.95Li0.05]0.985Ca0.015(Nb0.95Sb0.05)0.985Ti0.015O3 (K1−x Na x LCNST) lead-free piezoelectric ceramics prepared by the conventional solid-state method. A pure phase is observed in these ceramics with x = 0.30–0.80, and the K/Na ratio results in the phase transition of K1−x Na x LCNST ceramics. The Curie temperature of K1−x Na x LCNST ceramics decreases with the increase of Na content. A higher dielectric constant is observed in the ceramic with x = 0.40, and the dielectric loss almost decreases with the increase of Na content. Moreover, an enhanced piezoelectric behavior (d 33 ~ 227 pC/N and k p ~ 45.3 %) has been demonstrated in the K1−x Na x LCNST ceramic with x = 0.40. Therefore, optimizing the K/Na ratio is an effective way to enhance the piezoelectric properties of K1−x Na x LCNST ceramics.

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Acknowledgments

Authors gratefully acknowledge the supports of the Chengdu Medical College.

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Authors and Affiliations

  1. Teaching and Research Section of Physics, Chengdu Medical College, Chengdu, 610083, People’s Republic of China

    T. Chen, T. Zhang, J. F. Zhou, J. W. Zhang, Y. H. Liu & G. C. Wang

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  1. T. Chen
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  2. T. Zhang
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  3. J. F. Zhou
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  4. J. W. Zhang
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  5. Y. H. Liu
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  6. G. C. Wang
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Correspondence to T. Chen.

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Chen, T., Zhang, T., Zhou, J.F. et al. Piezoelectric properties of [(K1−x Na x )0.95Li0.05]0.985Ca0.015(Nb0.95Sb0.05)0.985Ti0.015O3 lead-free ceramics. Indian J Phys 86, 443–446 (2012). https://doi.org/10.1007/s12648-012-0087-1

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  • DOI: https://doi.org/10.1007/s12648-012-0087-1

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