Effects of Heat Treatment after Poling on Dielectric and Piezoelectric Properties in Li0.06Na0.94NbO3 Ceramics

被引：8

作者：

Aoyagi, Rintaro ^{[1
]}

Maeda, Masaki ^{[1
]}

Yokota, Takeshi ^{[2
]}

Gomi, Manabu ^{[2
]}

机构：

[1] Nagoya Inst Technol, Grad Sch Engn, Dept Engn Phys Elect & Mech, Nagoya, Aichi 4668555, Japan

[2] Nagoya Inst Technol, Grad Sch Engn, Dept Mat Sci & Engn, Nagoya, Aichi 4668555, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2013年 / 52卷 / 09期

关键词：

LEAD-FREE; PHASE-TRANSITION; DEPOLARIZATION TEMPERATURE; ELECTRICAL-PROPERTIES; NIOBATE; FATIGUE;

D O I：

10.7567/JJAP.52.09KD12

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The Influence of the heat treatment on the electrical properties in Li0.06Na0.94NbO3 (LNN6) lead-free ceramics was investigated. LNN6 poled samples showed an electromechanical coupling factor, k(p), of 0.19-0.20 and a mechanical quality factor, Q(m), of 800-900. By heat treatment at 320 degrees C for 10 h, k(p) hardly changed, but Q(m) markedly increased from 850 to 2890. The increase in Q(m) that depended on the heat treatment temperature and a higher Q(m) were obtained at 300 and 320 degrees C, which are near phase transition temperatures. The dielectric loss tan delta at a low frequency decreased with heat treatment. The poling field dependence of piezoelectric properties showed that the heat-treated samples have higher coercive field and internal bias. These results revealed that the heat treatment affects piezoelectric hardening for LNN6 ceramics. (C) 2013 The Japan Society of Applied Physics

引用

页数：5

共 37 条

[1] Fine-tolerance resonator applications of bismuth-layer-structured ferroelectric ceramics [J].