Sintering temperature-induced electrical properties of (Ba0.90Ca0.10)(Ti0.85Zr0.15)O3 lead-free ceramics |
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| Authors: | Jiagang Wu Dingquan Xiao Bo Wu Wenjuan Wu Jianguo Zhu Zhengchun Yang John Wang |
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| Affiliation: | 1. Department of Materials Science, Sichuan University, Chengdu 610064, PR China;2. Department of Materials Science, National University of Singapore, 117574 Singapore, Singapore;1. LPMC, Université de Picardie Jules Verne, 33 rue Saint-Leu, 80039 Amiens Cédex, France;2. LMCN, F.S.T.G. Université Cadi Ayyad, BP 549, Marrakech, Morocco;3. Jozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia;1. School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, Jiangsu, China;2. School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China;3. Key Laboratory of Inorganic Function Material and Device, Chinese Academy of Sciences, Shanghai 201800, China;1. Analytical & Testing Center, Sichuan University, Chengdu 610064, PR China;2. Department of Materials Science, Sichuan University, Chengdu 610064, PR China |
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| Abstract: | Effects of the sintering temperature on the microstructure and electrical properties of (Ba0.90Ca0.10)(Ti0.85Zr0.15)O3 (BCTZ) lead-free piezoelectric ceramics have been studied, where these ceramics were prepared by the conventional oxide-mixed method at varied sintering temperatures from 1300 °C to 1500 °C. These BCTZ ceramics exhibits a phase transition from a rhombohedral phase to the coexistence of rhombohedral and tetragonal phases with an increase of sintering temperature. With an increase of sintering temperature, their relative density and average grain size gradually increase, and electrical properties are improved greatly. These BCTZ ceramics sintered at ～1440 °C have optimum electrical properties: d33 ～ 442 pC/N and kp ～ 48.9%, making it a promising material for lead-free piezoelectric ceramics. |
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