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Issue 25, 2014
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Wide phase boundary zone, piezoelectric properties, and stability in 0.97(K0.4Na0.6)(Nb1−xSbx)O3–0.03Bi0.5Li0.5ZrO3 lead-free ceramics

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Abstract

In this work, the rhombohedral (R) and tetragonal (T) phase boundary of the 0.97(K0.4Na0.6)(Nb1−xSbx)O3–0.03Bi0.5Li0.5ZrO3 piezoceramics has been attained in a wide composition range of 0.035 ≤ x ≤ 0.08, and the Sb5+ could simultaneously shrink its TR–O and TO–T. A giant d33 of 380–405 pC N−1 and a TC of 200–292 °C have been observed in the ceramics with the coexistence of both R and T phases. In addition, the ceramics with 0.035 ≤ x ≤ 0.08 also show a good thermal stability of the d33, and an enhanced temperature stability of ferroelectricity could be observed in the ceramic with x = 0.035. As a result, adding the optimum antimony content is an efficient way to promote the electrical properties of potassium–sodium niobate ceramics with the R–T phase boundary.

Graphical abstract: Wide phase boundary zone, piezoelectric properties, and stability in 0.97(K0.4Na0.6)(Nb1−xSbx)O3–0.03Bi0.5Li0.5ZrO3 lead-free ceramics

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Publication details

The article was received on 14 Mar 2014, accepted on 30 Apr 2014 and first published on 22 May 2014


Article type: Communication
DOI: 10.1039/C4DT00768A
Citation: Dalton Trans., 2014,43, 9419-9426

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    Wide phase boundary zone, piezoelectric properties, and stability in 0.97(K0.4Na0.6)(Nb1−xSbx)O3–0.03Bi0.5Li0.5ZrO3 lead-free ceramics

    T. Zheng, J. Wu, X. Cheng, X. Wang, B. Zhang, D. Xiao, J. Zhu and X. Lou, Dalton Trans., 2014, 43, 9419
    DOI: 10.1039/C4DT00768A

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