Piezoelectric Properties of Low Loss and Low Temperature sintering PMN-PNN-PZT Ceramics According to the Amount of MnO2 Addition

2006 15th ieee international symposium on the applications of ferroelectrics Pub Date : 2006-07-01 DOI:10.1109/ISAF.2006.4387876

J. Yoo, Sang-ho Lee, L. Hwang, Y. Jeong, Durkwon Park

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Abstract

In this study, in order to develop the composition ceramics for low loss and low temperature sintering multilayer piezoelectric actuator, PMN-PNN-PZT ceramics were fabricated using Li₂CO₃ and Na₂CO₃ as sintering aids, and their piezoelectric and dielectric characteristics were investigated according to the amount of MnO₂ addition. At the sintering temperature of 900 , density and mechanical quality factor (Q_m) of specimen showed maximum value of 7.81[g/cm³], 1186 at 0.2wt% MnO₂, electromechanical coupling factor (k_p), piezoelectric constant (d₃₃) of specimen showed the maximum value of 0.608, 377[pC/N] at 0.1 wt% MnO₂ and dielectric constant (epsiv_r) slightly decreased with increasing MnO₂. At the composition ceramics sintered at 900 C with 0.2 wt% MnO₂, density, electromechanical coupling factor (k_p), mechanical quality factor (Q_m), dielectric constant (epsiv_r) and piezoelectric constant (d₃₃) showed the optimum value of 7.81[g/cm³], 0.597, 1186, 919, 356[pC/N], respectively, for multilayer piezoelectric actuator application.

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低温烧结PMN-PNN-PZT陶瓷的压电性能与MnO2添加量的关系

本研究以Li2CO3和Na2CO3为烧结助剂制备了PMN-PNN-PZT陶瓷，并根据MnO2的添加量对其压电和介电特性进行了研究。烧结温度为900时，试样的密度和机械品质因子(Qm)最大值为7.81[g/cm3]， 0.2wt% MnO2时为1186，机电耦合因子(kp)和压电常数(d33)最大值为0.608,0.1 wt% MnO2时为377[pC/N]，介电常数(epsivr)随MnO2的增加而略有下降。在900℃、0.2 wt% MnO2烧结条件下，多层压电陶瓷的密度、机电耦合系数(kp)、机械品质系数(Qm)、介电常数(epsivr)和压电常数(d33)分别为7.81[g/cm3]、0.597、1186、919、356[pC/N]。

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2006 15th ieee international symposium on the applications of ferroelectrics

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