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An approach to further improve piezoelectric and ferroelectric properties of (K0.5Na0.5)NbO3 ceramic

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Abstract

In this communication, an approach to further improve the electrical properties of (K0.5Na0.5)NbO3 (KNN) ceramic (abbreviated as KNN2) was reported. For the conventional ceramic technique (abbreviated as KNN1), the raw materials of K2CO3, Na2CO3 and Nb2O5 were directly used without further processing, while those for KNN2 were ball milled before mixing. The powders prepared by KNN2 exhibited smaller and uniform. The ceramics have higher densities than that of KNN1, which significantly improved the piezoelectric and ferroelectric properties of ceramics. The KNN2 ceramics exhibited very good piezoelectric properties with d33 = 123 pC/N, kp = 33.8 %, Qm = 219.8 and P r  = 20.2 μC/cm3, indicating that KNN2 is a strategy to obtain a dense KNN ceramic with more excellent electrical properties.

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Acknowledgments

This work was supported by Natural Science Foundation of China (Nos. 11364012, 51102058 21261007 and 21061004), Natural Science Foundation of Guangxi (Nos. 2013GXNSFAA019291 and 2012GXNSFDA053024), Research start-up funds Doctor of Guilin University of Technology (No. 002401003282), Project of Department of Science and Technology of Guangxi (No. 1348020-11) and Guilin (Nos. 20120112-1 and 20120112-2), and Program to Sponsor Teams for Innovation in the Construction of Talent Highlands in Guangxi Institutions of Higher Learning.

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  1. State Key Laboratory Breeding Base of Nonferrous Metals and Specific Materials Processing, Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, College of Material Science and Engineering, Guilin University of Technology, Guilin, 541004, China

    Xiuli Chen, Fen He, Jie Chen, Yiliang Wang, Huanfu Zhou & Liang Fang

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  1. Xiuli Chen
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  2. Fen He
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Correspondence to Huanfu Zhou.

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Chen, X., He, F., Chen, J. et al. An approach to further improve piezoelectric and ferroelectric properties of (K0.5Na0.5)NbO3 ceramic. J Mater Sci: Mater Electron 25, 2634–2637 (2014). https://doi.org/10.1007/s10854-014-1922-2

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