Title

Growth and properties of Li, Ta modified (K,Na)NbO3 lead-free piezoelectric single crystals

RIS ID

106479

Publication Details

Huo, X., Zheng, L., Zhang, S., Zhang, R., Liu, G., Wang, R., Yang, B., Cao, W. & Shrout, T. R. (2014). Growth and properties of Li, Ta modified (K,Na)NbO3 lead-free piezoelectric single crystals. Physica Status Solidi - Rapid Research Letters, 8 (1), 86-90.

Abstract

Li, Ta modified (K,Na)NbO3 single crystals with the size of 18 mm x 18 mm x 10 mm were successfully grown by top-seeded solution growth method, with orthorhombic-tetra-gonal phase transition temperature ∼79 °C and Curie temperature ∼276 °C. The electromechanical coupling factors k33 and kt were found to be ∼88% and ∼65%, respectively. The piezoelectric coefficient d33 for the [001]c poled crystals reached 255 pC/N. In addition, the electromechanical coupling factor exhibited high stability over the temperature range of -50 °C to 70 °C, making these lead free crystals good candidates for electromechanical applications. 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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Link to publisher version (DOI)

http://dx.doi.org/10.1002/pssr.201308173