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Structure, microstructure, and piezoelectric properties of ytterbium-doped potassium sodium niobate lead-free ceramics

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Abstract

The structure, microstructure, and piezoelectric properties of conventionally sintered Yb-doped K0.5Na0.5NbO3 (KNN) lead-free ceramics were investigated. Doping the KNN ceramics with Yb2O3 was effective in inhibiting the grain growth in the KNN ceramics and in densifying the ceramics. The 1.0 wt. % Yb-doped KNN ceramics showed the maximum density, about 96.8% of the theoretical density. X-ray diffraction analysis showed that a small number of Yb3+ ions could be incorporated into the matrix of the ceramicsto occupythe α- or β-sites in the crystal lattice, thereby significantly affecting the piezoelectric properties of the ceramics. Enhanced piezoelectric properties (i.e., d 33= 135 pC/N, k p = 34.5%, and Q m = 80.2) were obtained for the 0.50 wt. % Yb-doped KNN ceramics.

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Authors and Affiliations

  1. Department of Physics, Harbin Institute of Technology, Harbin, 150001, China

    Huan Li, Zhongxiang Zhou & Hao Tian

  2. Department of Physics, Harbin University of Science and Technology, Harbin, 150001, China

    Wenlong Yang

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  1. Huan Li
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  2. Wenlong Yang
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  3. Zhongxiang Zhou
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  4. Hao Tian
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Correspondence to Zhongxiang Zhou.

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Li, H., Yang, W., Zhou, Z. et al. Structure, microstructure, and piezoelectric properties of ytterbium-doped potassium sodium niobate lead-free ceramics. Electron. Mater. Lett. 9, 649–654 (2013). https://doi.org/10.1007/s13391-013-3015-4

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  • DOI: https://doi.org/10.1007/s13391-013-3015-4

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