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High-performance potassium sodium niobate-based lead-free materials without antimony

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Abstract

(1−x−y)(K0.45Na0.55)NbO3–yBi0.5Na0.5ZrO3–xBaHfO3–0.2%MnO2 ceramics without antimony have been fabricated by the conventional solid-state method, and influences of Bi0.5Na0.5ZrO3 and BaHfO3 contents on their structure and electrical properties are studied. Composition modification can result in the formation of rhombohedral–orthorhombic–tetragonal phase coexistence in the ceramics (y = 0.04 and 0.01 ≤ x ≤ 0.02 as well as x = 0.01 and 0.04 ≤ y ≤ 0.045). In the region of this phase boundary, the ceramics exhibit both enhanced piezoelectric properties (d33 ~ 385 pC/N, kp ~ 51%, S ~ 0.157%) and high Curie temperature (TC ~ 320 °C). Especially, good comprehensive properties and the absence of antimony make the material more environmentally friendly.

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Acknowledgements

Authors gratefully acknowledge the support of the National Natural Science Foundation of China (NSFC Nos. 51722208 and 51332003), the Key Technologies Research and Development Program of Sichuan Province (No. 2018JY0007) and the Fundamental Research Funds for the Central Universities (2012017yjsy111). Authors thank Mrs. Wang Hui (Analytical & Testing Center of Sichuan University) for performing the FE-SEM measurements.

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Authors and Affiliations

  1. Department of Materials Science, Sichuan University, Chengdu, 610064, People’s Republic of China

    Yi Ding, Ting Zheng, Xiang Lv, Jie Yin & Jiagang Wu

  2. Analytical and Testing Center, Southwest University of Science and Technology, Mianyang, 621010, People’s Republic of China

    Ruishi Xie

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  1. Yi Ding
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Correspondence to Jiagang Wu.

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Ding, Y., Zheng, T., Xie, R. et al. High-performance potassium sodium niobate-based lead-free materials without antimony. J Mater Sci: Mater Electron 29, 14487–14494 (2018). https://doi.org/10.1007/s10854-018-9582-2

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