Nonlinear Piezoelectric Effect in Ferroelectric Ceramics
Nonlinear Piezoelectric Effect in Ferroelectric Ceramics
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铁电陶瓷中的非线性压电效应
DOI：
10.1143/jjap.37.5292
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发表时间：
1998
影响因子：
1.5
通讯作者：
Y. Sasaki
中科院分区：
文献类型：
--
作者：
S. Takahashi;M. Yamamoto;Y. Sasaki
铁电陶瓷在压电功率器件中经常承受高电和高应力，导致非线性压电响应。在这项工作中，研究了铁电陶瓷 Pb(Mn1/3Sb2/3)O3–Pb(Mg1/3Nb2/3)O3–PbTiO3 在谐振模式下电激发的非线性行为。研究发现，诱发振动应力对非线性的影响比电场的影响更大。机械损耗因子 Qm-1、杨氏模量 cE 和压电 d31 常数显示为高于应力阈值的振动应力的平方的函数。还发现应力的非线性比例常数按Qm-1、d31和cE的顺序变小，并且材料的压电性越软，非线性比例常数变得越大。
Ferroelectric ceramic is often subjected to both high electric and high stress in piezoelectric power devices, causing nonlinear piezoelectric response. In this work, nonlinear behavior of the ferroelectric ceramic, Pb(Mn1/3Sb2/3)O3–Pb(Mg1/3Nb2/3)O3–PbTiO3, electrically excited at resonant mode was studied. It was found that an induced vibration stress has a greater effect on the nonlinearity than an electric field. Mechanical loss factor Qm-1, Young's modulus cE and piezoelectric d31 constant are shown to be a function of the square of the vibration stress above the stress threshold. It was also found that the nonlinear proportional constant for the stress becomes smaller in the order of Qm-1, d31 and cE, and that the softer in piezoelectricity the material is, the larger the nonlinear proportional constant becomes.