Nonlinear piezoelectricity in Li-modified (K,Na)NbO3 system ceramics
Nonlinear piezoelectricity in Li-modified (K,Na)NbO3 system ceramics
复制标题
Li改性(K,Na)NbO3系陶瓷的非线性压电性
DOI：
10.7567/jjap.54.10nd11
复制
发表时间：
2015
影响因子：
1.5
通讯作者：
S. Tashiro
中科院分区：
文献类型：
--
作者：
K. Ishii;S. Tashiro
研究了Li掺杂对无铅(K，Na)NbO_3(KNN)系陶瓷非线性压电性的影响。非线性压电性会引起非线性电压的产生、谐振频率的变化、高功率振动下的电流跳跃等非线性现象。通过测量样品在恒流驱动过程中产生的三次谐波电压来估计非线性压电性的大小。随着Li取代量的增加，材料的非线性压电性降低，并在相界成分处达到最小值。相界面处的非线性压电系数小于未取代的KNN陶瓷的十分之一。
The effects of Li substitution on the nonlinear piezoelectricity in lead-free (K,Na)NbO3 (KNN) system ceramics were studied. The nonlinear piezoelectricity causes nonlinear phenomena such as the generation of nonlinear voltages, a change in the resonance frequency, and current jumping under high-power vibration. The magnitude of the nonlinear piezoelectricity was estimated by measuring the third-harmonic voltage generated in samples during constant-current driving. With the increase in the amount of substituted Li, the nonlinear piezoelectricity decreased and became a minimum at the phase boundary composition. The nonlinear piezoelectric coefficient at the phase boundary composition was less than one-tenth of the value in the nonsubstituted KNN ceramic.
影响因子：
4
作者：
Guo, YP;Kakimoto, K;Ohsato, H
通讯作者：
Ohsato, H