1. Enhanced transduction coefficient in piezoelectric PZT ceramics by mixing powders calcined at different temperatures
- Author
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Zhou Taosheng, Binbin Tong, Jinrong Cheng, Jie Jian, Jian Guo, Jianguo Chen, and Shang Xunzhong
- Subjects
010302 applied physics ,Materials science ,Analytical chemistry ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Piezoelectricity ,Grain size ,law.invention ,Spontaneous polarization ,Tetragonal crystal system ,Transduction (biophysics) ,law ,visual_art ,0103 physical sciences ,Materials Chemistry ,Ceramics and Composites ,visual_art.visual_art_medium ,Relative density ,Calcination ,Ceramic ,0210 nano-technology - Abstract
Large transduction coefficient ( d 33 × g 33 ) is difficult to obtain in piezoelectric ceramics because these two parameters show opposite trends with compositional modifications. Herein, the Pb(Zr0.53Ti0.47)O3 ceramic powders were calcinated under different temperatures (A:830 °C, B:860 °C, and C:890 °C), and then mixed together according to different weight ratios (1A:1B:1C, 1A:2B:1C, 1A:2B:3C and 3A:2B:1C) for ceramics preparation. Both d33 and g33 are improved successfully, and the transduction coefficient with the weight ratio of 1A:2B:3C reaches up to 17,500 × 10−15 m2/N, which is 60 % higher than that with the powders calcinated under 830 °C, and at least twice those of commercial PZT-4, PZT-5A and PZT-8 ceramics. The improved transduction coefficient is owing to the enhanced piezoelectric constant and spontaneous polarization resulted from the increased grain size, relative density and the fraction of tetragonal phase. These results indicate that this is a simple but effective way to tailor the transduction coefficient in piezoelectric ceramics.
- Published
- 2020