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Advances in Lead-Free Piezoelectric Materials pp 109–189Cite as

Alkali Niobate-Based Piezoelectric Materials

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Abstract

As one of the most promising lead-free candidates, alkali niobate-based piezoelectric ceramics have been investigated for more than fifty years due to their moderate piezoelectricity and high Curie temperature. Several advances are speeding up the research of alkali niobate-based piezoelectric ceramics, and considerable efforts are given to the study of phase boundaries, generating a serial of high d33 values of 400–700 pC/N. This chapter reviews the researches on structure and property of alkali niobate-based ceramics, with a focus on KNN-based ceramics. The phase boundaries, piezoelectric properties, and temperature stability of KNN-based ceramics are systematically discussed with the supporting of advanced physical mechanisms involving phase structure and domain configuration. Finally, the future direction of KNN-based ceramics is outlined, focusing on the balanced development of piezoelectricity and temperature stability.

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  1. Department of Materials Science, Sichuan University, Chengdu, Sichuan, China

    Jiagang Wu

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Wu, J. (2018). Alkali Niobate-Based Piezoelectric Materials. In: Advances in Lead-Free Piezoelectric Materials. Springer, Singapore. https://doi.org/10.1007/978-981-10-8998-5_3

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