Microstructure and Piezoelectric Properties of 0.97(Na, K, Li)(Nb, Sb, Ta)O₃-0.03(Bi, Na, Sr)ZrO₃ Ceramics Doped with Boron Oxide for Piezoelectric Actuator

Ju-Hyun Yoo; Yeong-Ho Jeong

doi:10.1166/jnn.2021.18898

Microstructure and Piezoelectric Properties of 0.97(Na, K, Li)(Nb, Sb, Ta)O₃-0.03(Bi, Na, Sr)ZrO₃ Ceramics Doped with Boron Oxide for Piezoelectric Actuator

J Nanosci Nanotechnol. 2021 Mar 1;21(3):2059-2062. doi: 10.1166/jnn.2021.18898.

Authors

Ju-Hyun Yoo¹, Yeong-Ho Jeong²

Affiliations

¹ Department of Electrical Engineering, Semyung University, 65, Semyeong-ro Jecheon-si Chungcheongbuk-do, 390-711, Republic of Korea.
² Department of Electrical Engineering, Korea National University of Transp., Chung ju, Korea.

PMID: 33404494
DOI: 10.1166/jnn.2021.18898

Abstract

In this study, with the motivation of developing low temperature sintered Pb-free ceramics for use in piezoelectric actuators, 0.97(Na_0.52K_0.443Li_0.037)(Nb_0.923Sb_0.04Ta_0.037)O₃ - 0.03 (Bi_0.5Na_0.5)_0.9 (Sr)_0.1ZrO₃ ceramics were manufactured and their piezoelectric properties analyzed. All specimens doped with boron oxide showed a typical pure perovskite structure. The ceramics with x = 0.1 composition showed a co-existence of R-T phases. When boron oxide is doped at 0.1 wt%, excellent physical properties of d₃₃ = 270 pC/N ε_r = 1386, k_p = 0.416, and Q_m = 130 were obtained making the ceramic ideal for use in piezoelectric actuators.