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Issue 12, 2014
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Large d33 in (K,Na)(Nb,Ta,Sb)O3-(Bi,Na,K)ZrO3 lead-free ceramics

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To protect the environment and human health, it is necessary to develop high-performance lead-free piezoceramics to replace the lead-based ones in some electronic devices. Here we report first a large piezoelectricity in (K,Na)NbO3-based lead-free piezoceramics prepared by the conventional solid-state method. The rhombohedral–tetragonal phase boundary is observed in the ceramics with a composition of 0.04 ≤ x ≤ 0.06. Those ceramics with 0.01 ≤ x ≤ 0.06 possess a good comprehensive performance of d33 (380–460 pC N−1) and TC (170–287 °C). Moreover importantly, a peak d33 of ∼460 pC N−1 is shown in the ceramic with x = 0.04, which is superior to all other reported results of KNN-based ceramics, including the reported results by Saito et al. (Nature, 2004, 432, 84). We believe that such a material system is a very promising candidate for potassium–sodium niobate piezoceramics.

Graphical abstract: Large d33 in (K,Na)(Nb,Ta,Sb)O3-(Bi,Na,K)ZrO3 lead-free ceramics

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Publication details

The article was received on 06 Dec 2013, accepted on 02 Jan 2014 and first published on 12 Feb 2014

Article type: Communication
DOI: 10.1039/C3TA15075E
Citation: J. Mater. Chem. A, 2014,2, 4122-4126
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    Large d33 in (K,Na)(Nb,Ta,Sb)O3-(Bi,Na,K)ZrO3 lead-free ceramics

    X. Wang, J. Wu, D. Xiao, X. Cheng, T. Zheng, B. Zhang, X. Lou and J. Zhu, J. Mater. Chem. A, 2014, 2, 4122
    DOI: 10.1039/C3TA15075E

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