Electrical Properties and Polarization Reversal in (Li,Na)NbO3 Lead-Free Piezoelectric Ceramics

被引：2
|
作者：
Ohashi, Takayuki [1 ]
Aoyagi, Rintaro [1 ]
Maeda, Masaki [1 ]
Iwata, Makoto [1 ]
机构：
[1] Nagoya Inst Technol, Dept Engn Phys Elect & Mech, Nagoya, Aichi 4668555, Japan
来源：
ELECTROCERAMICS IN JAPAN XIV | 2011年 / 485卷
关键词：
lead-free piezoelectric ceramics; (Li; Na)NbO3; electrical properties; polarization reversal; DEPOLARIZATION TEMPERATURE;
D O I：
10.4028/www.scientific.net/KEM.485.69
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this study, the relationships between the electrical properties and polarization switching of lead-free (Li0.06Na0.94)NbO3 (LNN6) ceramics were investigated. The electrical properties of stoichiometric LNN6 did not change with polarization switching. On the other hand, the frequency dependence of the impedance of Na-deficient LNN decreased with polarization switching, and the coupling factor k(p), the piezoelecric constant d(33) and the dielectric constant epsilon(T)(33)/epsilon(0) decreased with polarization switching. Moreover, the dielectric curve of Na-deficient LNN6 after 10 switchings showed peaks at approximately 330, 400 and 500 degrees C
引用
收藏
页码：69 / 72
页数：4
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