Microstructure and Piezoelectric Properties of (Na_0.52K_0.443Li_0.037)(Nb_0.923Sb_0.04 Ta_0.037)O₃ – (Bi_0.5Na_0.5)_0.9(Sr)_0.1ZrO₃ Ceramics Sintered at Low Temperature

Abstract

Piezoelectric devices such as piezoelectric speaker, motor, and actuator have been actively researched. Accordingly, for developing the ceramics capable of being sintered at low temperature for piezoelectric devices, 0.97(Na_0.52K_0.443Li_0.037)(Nb_0.923Sb_0.04 Ta_0.037)O₃ − 0.03(Bi_0.5Na_0.5)_0.9(Sr)_0.1ZrO₃ ceramics were manufactured according to x (=sintering time) and their piezoelectric and dielectric properties were systematically investigated. At the x = 9 h, the best piezoelectric properties of d33 = 244.33pC/N ε_r = 1475, and k_p = 0.441 were appeared, respectively, for piezoelectric devices.

Keywords:

• (Na,K)NbO₃
• piezoelectric actuator
• sintering time
• dielectric properties

Acknowledgement

This paper was supported by 2020 Semyung University Fund.