Effect of Nonstoichiometric Pb Content on the Properties of PZT Ceramics

Abstract:

The effect of nonstoichiometric Pb content on the properties of PZT has been studied. The samples of Pb_xBa_0.04(Li_1/4Sb_3/4)_0.02(Zr_0.52Ti_0.48)_0.98O₃ (0.94≤x≤0.98) were prepared by the solid state route and sintered at 1200
°C. The Pb content changed from 0.94 to 0.98. The result shows that when the Pb content deviates from the stoichiometric ratio (x=0.96), the grain growth and densification of ceramics are promoted. The phases analysis shows that ZrO₂ phase is detected when the amount of Pb is lower than 0.96, while when the Pb content is more than 0.96, the PbO phase is absent. The optimum composition of Pb_xBa_0.04(Li_1/4Sb_3/4)_0.02(Zr_0.52Ti_0.48)_0.98O₃ solid solution system are obtained when x is 0.95, and the ε^T33/ε0, d₃₃ and k_p of the PZT ceramics are: 2281, 516 pC/N and 0.80, respectively.

• Periodical: Advanced Materials Research (Volumes 415-417)
• Pages: 1883-1887
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.415-417.1883
• Online since: December 2011
• Authors: Feng Kuo Zhao, Wei Bing Ma, Qing Chi Sun, Yong Zhang, Hai Quan Liu
• Keywords: MPB, Non-Stoichiometry, Pb Content, Piezoelectric, PZT, Vacancy

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