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In this paper, Sm-doped 0.96(K0.48Na0.52)(Nb0.95Sb0.05)–0.04Bi0.5(Na0.82K0.18)0.5ZrO3 (abbreviated as KNSN–0.04BNKZ) lead-free piezoelectric ceramics were prepared by conventional solid-state sintering method and the effects of Sm2O3 on the phase structure, microstructure, electrical and luminescent properties of KNSN–0.04BNKZ potteries were studied. Results revealed that a single solid solution phase with pseudo-cubic perovskite structure was formed between KNSN–0.04BNKZ and Sm2O3. Existence of weak dielectric/ferroelectric properties with a diffuse dielectric anomaly and slim PE hysteresis loops of the Sm-doped KNSN–0.04BNKZ demonstrated the ferroelectric relaxor behavior of the KNNS–0.04BNKZ–xSm ceramics. Accordingly, the temperature stability and fatigue behavior of the modified ceramics were significantly improved. It was found that the KNSN–0.04BNKZ ceramics with 0.002 mol Sm addition exhibited nearly temperature independent properties and fatigue-free behavior. Moreover, Sm-modified KNSN–0.04BNKZ exhibits a bright photoluminescence with a strong orange emission under visible light irradiation. As a material with both electrical and luminescent properties, it has good application prospect in future optoelectronic components by integrating its luminescent and electrical properties.


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Electrical properties and luminescence properties of 0.96(K0.48Na0.52)(Nb0.95Sb0.05)–0.04Bi0.5(Na0.82K0.18)0.5ZrO3xSm lead-free ceramics

Show Author's information Wei LIaJigong HAOa( )Wei LIa( )Juan DUaPeng FUaWenzhi SUNaChong CHENaZhijun XUbRuiqing CHUb
College of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, China
School of Environmental and Materials Engineering, Yantai University, Yantai 264005, China

Abstract

In this paper, Sm-doped 0.96(K0.48Na0.52)(Nb0.95Sb0.05)–0.04Bi0.5(Na0.82K0.18)0.5ZrO3 (abbreviated as KNSN–0.04BNKZ) lead-free piezoelectric ceramics were prepared by conventional solid-state sintering method and the effects of Sm2O3 on the phase structure, microstructure, electrical and luminescent properties of KNSN–0.04BNKZ potteries were studied. Results revealed that a single solid solution phase with pseudo-cubic perovskite structure was formed between KNSN–0.04BNKZ and Sm2O3. Existence of weak dielectric/ferroelectric properties with a diffuse dielectric anomaly and slim PE hysteresis loops of the Sm-doped KNSN–0.04BNKZ demonstrated the ferroelectric relaxor behavior of the KNNS–0.04BNKZ–xSm ceramics. Accordingly, the temperature stability and fatigue behavior of the modified ceramics were significantly improved. It was found that the KNSN–0.04BNKZ ceramics with 0.002 mol Sm addition exhibited nearly temperature independent properties and fatigue-free behavior. Moreover, Sm-modified KNSN–0.04BNKZ exhibits a bright photoluminescence with a strong orange emission under visible light irradiation. As a material with both electrical and luminescent properties, it has good application prospect in future optoelectronic components by integrating its luminescent and electrical properties.

Keywords:

lead-free piezoelectric ceramics, potassium–sodium niobate, phase structure, ferroelectricity, luminescent
Received: 03 April 2019 Revised: 08 August 2019 Accepted: 17 August 2019 Published: 05 February 2020 Issue date: February 2020
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Publication history

Received: 03 April 2019
Revised: 08 August 2019
Accepted: 17 August 2019
Published: 05 February 2020
Issue date: February 2020

Copyright

© The author(s) 2019

Acknowledgements

This work was supported by the National Key R&D Program of China (No. 2016YFB0402701), Innovation Team of Higher Educational Science and Technology Program in Shandong Province (No. 2019KJA025), National Natural Science Foundation of China (Nos. 51701091 and 51802137), Natural Science Foundation of Shandong Province of China (Nos. ZR2018MEM011 and ZR201709270099), Opening Project of Key Laboratory of Inorganic Functional Materials and Devices, Chinese Academy of Sciences (Grant No. KLIFMD201705), and Research Foundation of Liaocheng University (No. 318011906).

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