Multi-phase structure and electrical properties of Bi0.5Li0.5ZrO3 doping K0.48Na0.56NbO3 lead-free piezoelectric ceramics

Xiaoyan PENG; Boping ZHANG; Lifeng ZHU; Lei ZHAO; Ruixiao MA; Bo LIU; Xiaodong WANG

doi:10.1007/s40145-018-0259-3

Journal of Advanced Ceramics 2018, 7(1): 79-87 https://doi.org/10.1007/s40145-018-0259-3

Research Article |

Open Access | Issue | Published: 12 February 2018

Multi-phase structure and electrical properties of Bi_0.5Li_0.5ZrO₃ doping K_0.48Na_0.56NbO₃ lead-free piezoelectric ceramics

Show Author's Information Hide Author's Information Xiaoyan PENG^{^a^,^b}, Boping ZHANG^{^a}(

), Lifeng ZHU^{^a}, Lei ZHAO^{^c}, Ruixiao MA^{^a}, Bo LIU^{^a}, Xiaodong WANG^{^a}

^a School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

^b New Metallurgy Hi-Tech Group Co., Ltd., China Iron & Steel Research Institute Group, Beijing 100081, China

^c Hebei Key Lab of Optic-Electronic Information and Materials, College of Physics Science & Technology, Hebei University, Baoding 071002, China

Keywords:

electrical properties, lead-free piezoelectric ceramics, potassium–sodium niobate (KNN), solid-state sintering, multi-phase

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PENG X, ZHANG B, ZHU L, et al. Multi-phase structure and electrical properties of Bi_0.5Li_0.5ZrO₃ doping K_0.48Na_0.56NbO₃ lead-free piezoelectric ceramics. Journal of Advanced Ceramics, 2018, 7(1): 79-87. https://doi.org/10.1007/s40145-018-0259-3

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Abstract

(1–x)K_0.48Na_0.56NbO₃–xBi_0.5Li_0.5ZrO₃ (KNN–xBLZ, x = 0–0.06) lead-free piezoelectric ceramics were prepared by the conventional solid-state sintering method, and their phase structures and electric properties as well as $T_{C}$ were systematically investigated. The orthorhombic–tetragonal (O–T) two phases were detected in all (1–x)K_0.48Na_0.56NbO₃–xBi_0.5Li_0.5ZrO₃ ceramics at 0.01 ≤ x ≤ 0.05. Due to the appropriate ratio between O phase and T phase ( $C_{O} / C_{T}$ = 45/55), high piezoelectric properties of $d_{33}$ = 239 pC/N, $k_{p}$ = 34%, and $P_{r}$ = 25.23 μC/cm² were obtained at x = 0.04. Moreover, a high $T_{C}$ = 348 ℃ was also achieved in KNN–xBLZ ceramic at x = 0.04. These results indicate that (1–x)K_0.48Na_0.56NbO₃–xBi_0.5Li_0.5ZrO₃ system is a promising candidate for high-temperature piezoelectric devices.

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Multi-phase structure and electrical properties of Bi_0.5Li_0.5ZrO₃ doping K_0.48Na_0.56NbO₃ lead-free piezoelectric ceramics

Show Author's information Hide Author's Information Xiaoyan PENG^{^a^,^b}, Boping ZHANG^{^a}(

), Lifeng ZHU^{^a}, Lei ZHAO^{^c}, Ruixiao MA^{^a}, Bo LIU^{^a}, Xiaodong WANG^{^a}

^a School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

^b New Metallurgy Hi-Tech Group Co., Ltd., China Iron & Steel Research Institute Group, Beijing 100081, China

^c Hebei Key Lab of Optic-Electronic Information and Materials, College of Physics Science & Technology, Hebei University, Baoding 071002, China

Abstract

Keywords: electrical properties, lead-free piezoelectric ceramics, potassium–sodium niobate (KNN), solid-state sintering, multi-phase

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Received: 07 November 2017

Revised: 13 January 2018

Accepted: 14 January 2018

Published: 12 February 2018

Issue date: March 2018

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