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Issue 34, 2015
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Multi-scale thermal stability of niobate-based lead-free piezoceramics with large piezoelectricity

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Abstract

Growing environmental concerns are pushing the development of lead-free piezoceramics with both outstanding piezoelectric properties and reasonable thermal stability. Herein, we realized a large piezoelectric coefficient d33 of 430 pC N−1 in 0.96(K0.4Na0.6)(Nb0.96Sb0.04)O3–0.04Bi0.5K0.5Zr0.85Sn0.15O3 (KNNS–BKZS) polycrystals by constructing a rhombohedral–tetragonal (R–T) phase boundary. Investigations of the in situ thermal stability of the piezoelectric properties on multiple scales reveal that the micro-scale piezoelectric response is much more stable compared to the macro-scale response, indicating the significant role of extrinsic contributions from domain wall movements. These findings demonstrate the relationship between multi-scale properties and domain structures, revealing that the high piezoelectricity is attributed to nano-domains at the R–T phase boundary.

Graphical abstract: Multi-scale thermal stability of niobate-based lead-free piezoceramics with large piezoelectricity

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Publication details

The article was received on 13 May 2015, accepted on 14 Jul 2015 and first published on 14 Jul 2015


Article type: Communication
DOI: 10.1039/C5TC01357G
Citation: J. Mater. Chem. C, 2015,3, 8780-8787
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    Multi-scale thermal stability of niobate-based lead-free piezoceramics with large piezoelectricity

    J. Zhou, K. Wang, F. Yao, T. Zheng, J. Wu, D. Xiao, J. Zhu and J. Li, J. Mater. Chem. C, 2015, 3, 8780
    DOI: 10.1039/C5TC01357G

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