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In this study, three types of BaTiO ₃ powders with different particle sizes synthesized by hydrothermal method were used to fabricate the lead-free barium titanate piezoelectric ceramics. The BaTiO ₃ ceramics from these three types of BaTiO ₃ powders were sintered at different temperature(1150–1350°C) using traditional sintering method, and their piezoelectric properties were investigated and compared. The results indicate that the BaTiO ₃ piezoelectric ceramics from BT03 powder exhibit highest d₃₃ value (over 350 pC/N). The reasons were also investigated by comparing the properties of three kinds of BaTiO ₃ powders and their compacts sintered at different temperature.
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Zhu et al. (2009) studied this question.
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