Investigation of phase structure and electrical properties of PMN-PSN-PNN–PZT ceramics with different PNN content

IF 1.7 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of Electroceramics Pub Date : 2024-07-18 DOI:10.1007/s10832-024-00355-z

Tao Chu, Xingchen He, Tao Li, Jun Deng, Cailin Wang, Juping Xu, Aigen Huang

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Abstract

Piezoelectric ceramics, as an essential electronic material, are widely used in various actuators and ultrasonic transducers. In this study, piezoceramics in the formula Pb_0.94Sr_0.04Ba_0.02(Mg_1/3Nb_2/3)_0.025(Sb_1/2Nb_1/2)_0.025(Ni_1/3Nb_2/3)_x(Zr_0.48Ti_0.52)_0.95−xO₃ + 0.2wt%Li₂CO₃, where x = 0.21 − 0.17(abbreviated as PMN-PSN-xPNN-(0.95-x)PZT) were investigated. By changing the PNN content from 0.21 to 0.17, high piezoelectric coefficient d₃₃ from 860 pC/N to 700 pC/N, high Curie temperature T_c from 137 ℃ to 168 ℃ were obtained. All the ceramics show excellent electrical properties. It is 15 − 20% better than PNN-PZT or doped PNN-PZT piezoelectric ceramics in certain aspects. What’s more, the ceramics also carry extraordinary electromechanical coupling factor k_p (from 67 to 73%). Hence, this is an excellent candidate for actuators and transducers applications.

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不同 PNN 含量的 PMN-PSN-PNN-PZT 陶瓷的相结构和电气性能研究

压电陶瓷作为一种重要的电子材料，被广泛应用于各种致动器和超声波传感器中。在这项研究中，压电陶瓷的化学式为 Pb0.94Sr0.04Ba0.02(Mg1/3Nb2/3)0.025(Sb1/2Nb1/2)0.025(Ni1/3Nb2/3)x(Zr0.48Ti0.52)0.95-xO3+0.2wt%Li2CO3，其中 x = 0.21 - 0.17（简称 PMN-PSN-xPNN-(0.95-x)PZT）。通过将 PNN 含量从 0.21 改为 0.17，获得了从 860 pC/N 到 700 pC/N 的高压电系数 d33，以及从 137 ℃ 到 168 ℃ 的高居里温度 Tc。所有陶瓷都具有优异的电气性能。在某些方面，它比 PNN-PZT 或掺杂 PNN-PZT 的压电陶瓷好 15 - 20%。此外，这些陶瓷还具有非凡的机电耦合系数 kp（从 67% 到 73%）。因此，这是致动器和传感器应用的绝佳候选材料。

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来源期刊

Journal of Electroceramics 工程技术-材料科学：硅酸盐

CiteScore

2.80

自引率

5.90%

发文量

审稿时长

5.7 months

期刊介绍： While ceramics have traditionally been admired for their mechanical, chemical and thermal stability, their unique electrical, optical and magnetic properties have become of increasing importance in many key technologies including communications, energy conversion and storage, electronics and automation. Electroceramics benefit greatly from their versatility in properties including: -insulating to metallic and fast ion conductivity -piezo-, ferro-, and pyro-electricity -electro- and nonlinear optical properties -feromagnetism. When combined with thermal, mechanical, and chemical stability, these properties often render them the materials of choice. The Journal of Electroceramics is dedicated to providing a forum of discussion cutting across issues in electrical, optical, and magnetic ceramics. Driven by the need for miniaturization, cost, and enhanced functionality, the field of electroceramics is growing rapidly in many new directions. The Journal encourages discussions of resultant trends concerning silicon-electroceramic integration, nanotechnology, ceramic-polymer composites, grain boundary and defect engineering, etc.