Grain-oriented sodium bismuth titanate-based lead-free piezoelectric ceramics prepared using the pulsed strong magnetic field and template grain growth
作者： Jun Zhao , Fajun Wang , Wen Li , Hui Li , Dongxiang Zhou
DOI: 10.1063/1.3486474
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摘要: In this paper, 0.94Bi0.5Na0.5TiO3–0.06BaTiO3 (BNBT6) lead-free piezoelectric ceramics have been prepared using the gelcasting technology. The dielectric and properties of these investigated. specimens were sintered at 1100–1200 °C after grain-oriented under pulsed strong magnetic field during solidification green bodies. Compared with BNBT6 samples without applying field, textured by 5 T has a coercive reduction 400 V/mm, which makes polarization process easier. Meanwhile, it is noted that orientation degree increases increasing sintering temperature, whereas constant electromechanical coupling coefficients are improved. If SrTiO3 seed grain introduced, can reach 0.70 relative density up to 96%. anisotropic in directions vertical parallel applied ma...
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