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首页> 外文期刊>Materials Letters >Effects of poling field on the piezoelectric and dielectric properties of Nb additive PZT-based ceramics and their applications on SAW devices
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Effects of poling field on the piezoelectric and dielectric properties of Nb additive PZT-based ceramics and their applications on SAW devices

机译：极化场对Nb添加剂PZT基陶瓷压电和介电性能的影响及其在SAW器件中的应用

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摘要

The piezoelectric lead zirconate titanate (PZT)-based ceramics with a composition of Pb_(1-0.5x)(Zr_(0.52)Ti_(0.48))_(1-x)Nb_xO_3; x=0.02-0.06 were prepared by conventional mixed-oxide method, using sintering temperature at 1250 deg C and poling field at 0-50kV/cm. Microstructural and compositional analyses of the PZT-based ceramics have been carried out using XRD and SEM. The dielectric constant measured at 1 kHz is about 1500 and the loss factor is small than 0.02. The maximum planar electromechanical coupling coefficient, k_p is 0.591 as x=0.055 and E_p= 30 kV/cm. It showed that the Nb additives were helpful in improving both of the dielectric and piezoelectric properties. Surface acoustic wave (SAW) device, which the PZT-ceramic was used for substrate, was fabricated.
机译：组成为Pb_（1-0.5x）（Zr_（0.52）Ti_（0.48））_（1-x）Nb_xO_3的压电锆钛酸铅（PZT）基陶瓷;通过常规的混合氧化物方法，使用1250℃的烧结温度和0-50kV / cm的极化场，制备x ＝ 0.02-0.06。使用XRD和SEM对PZT基陶瓷进行了微观结构和成分分析。在1 kHz下测得的介电常数约为1500，损耗因子小于0.02。最大平面机电耦合系数k_p为0.591，因为x = 0.055，E_p = 30 kV / cm。表明Nb添加剂有助于改善介电和压电性能。制作了表面声波（SAW）装置，该装置使用PZT陶瓷作为衬底。

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