Dielectric and piezoelectric properties of Sb doped (NaBi)0.38(LiCe)0.05[]0.14Bi2Nb2O9 ceramics |
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Authors: | Zhihang Peng Qiang ChenJiagang Wu Xiaohong ZhuDingquan Xiao Jianguo Zhu |
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Affiliation: | College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan 610064, People''s Republic of China |
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Abstract: | Sb5+-doped (NaBi)0.38(LiCe)0.05]0.14Bi2Nb2O9 (represented as NBNLCS-x, where ] represents A-site vacancies) ceramics were prepared by the conventional solid-state route. The ceramics well sintered to approach ∼98.5% theoretical density and the tetragonality of crystal structure increased with Sb5+ additions. However, the Curie temperature (TC) and the piezoelectric coefficient (d33) of Sb5+-modified ceramics gradually decreased. The 3 mol% Sb5+-doped samples exhibited optimum properties with a d33 value of ∼22 pC/N planar electromechanical coupling factor (kp) of ∼11.2% and relatively high TC of ∼765 °C. These results indicate that NBNLCS-x material is a promising candidate for high-temperature piezoelectric applications. |
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Keywords: | Bismuth layer-structured ferroelectrics Na0 5Bi2 5Nb2O9 Piezoelectric properties |
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