Abstract
The influence of Li+ doping on the structure and electrical properties of 10 mol% Sr2+-substituted 0.1Pb(Zn1/3Nb2/3)O3–0.1Pb(Ni1/3Nb2/3)O3–0.8Pb(Zr0.52Ti0.48)O3 (abbreviated as PZN–PNN–PZT) piezoelectric ceramics was studied. The Li+-doped PZN–PNN–PZT ceramics were successfully synthesized by the conventional solid-state reaction method at a low sintering temperature of 1100 °C, in contrast to 1300 °C required for their undoped counterpart. It is revealed that a phase transition occurs from rhombohedral to tetragonal with the addition of Li2CO3. All the as-prepared PZN–PNN–PZT ceramics present a uniform grain size distribution, while only the one with 0.1 wt% Li2CO3 added shows a high relative density of 98.4%. As a result, optimum comprehensive electrical properties are achieved in the 0.1 wt% Li2CO3-modified PZN–PNN–PZT ceramic: d 33 ~ 950 pC/N, k p ~ 0.69, ε r ~ 4700, P r ~ 33.5 µC/cm2, thus making it a promising candidate for high performance piezoelectric applications.
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This work was supported by the Chongqing Sipat Owncore Technology Co., Ltd. under Contract No. 16H0991 and the fund from the College of Materials Science & Engineering, Sichuan University.
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Wang, K., Zhu, X., Zhang, Y. et al. Low temperature synthesis and enhanced electrical properties of PZN–PNN–PZT piezoelectric ceramics with the addition of Li2CO3 . J Mater Sci: Mater Electron 28, 15512–15518 (2017). https://doi.org/10.1007/s10854-017-7439-8
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DOI: https://doi.org/10.1007/s10854-017-7439-8