Large Signal Radial Resonant Responses of Sm-Doped PMN–PT Relaxor Ferroelectric Ceramics

被引：0
|
作者：
Wu J. [1 ]
Ling Z. [1 ]
机构：
[1] College of Materials Science and Engineering, South China University of Technology, Guangzhou
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2023年 / 51卷 / 06期
关键词：
large signal; lead magnesium niobate-lead titanate; radial resonant responses; relaxor ferroelectric ceramics;
D O I：
10.14062/j.issn.0454-5648.20230162
中图分类号：
学科分类号：
摘要：
Pb0.9625Sm0.025[(Mg1/3Nb2/3)0.71Ti0.29]O3 ceramic material with a high piezoelectricity wasprepared by a two-step oxide solid reaction method. The effects of driving field amplitude and temperature on the radial resonance characteristics were investigatedby a large signal resonant response test system. The results show that the resonant response at a low driving field can maintain a single resonant peak until complete depolarization. However, the resonant response becomes complicated, and some multiple resonant peaks appear even at a low temperatureas a driving field increases. The resonant properties areclosely related to the mechanical quality factor Qm, ferroelectric domain size and phase composition. The thermal effect produced by applying a high driving field on the low Qm material accelerates the splitting of macro-domains and induces a first-order ferroelectric phase transition. The instability of resonant characteristics and the large resonant frequency temperature coefficient restrictthe application of Sm-doped PMN-PTrelaxor ferroelectric ceramics, especially at a high driving field. © 2023 Chinese Ceramic Society. All rights reserved.
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页码：1484 / 1489
页数：5
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