Effect of Li_0.12Na_0.88NbO₃ content on the electrical properties of Bi_0.50Na_0.50TiO₃ lead-free piezoelectric ceramics

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• 作者：Tao Chen ; ^{chentaocmc@163.com} ; ^{myfriendsroom@163.com} ; Ting Zhang ; Guangchang Wang ; Jifang Zhou ; Jianwei Zhang ; Yuhong Liu
• 关键词：Bi0.50Na0.50TiO3 ; Li0.12Na0.88NbO3 ; Electrical properties
• 刊名：Journal of Alloys and Compounds
• 出版年：2012
• 出版时间：15 April, 2012
• 年：2012
• 卷：520
• 期：Complete
• 页码：7-10
• 全文大小：652 K

文摘

Li_0.12Na_0.88NbO₃-modified Bi_0.50Na_0.50TiO₃ [(1 ?#xA0;x)BNT-xLNN] lead-free piezoelectric ceramics were prepared by the conventional solid-state solid method. Effects of LNN content on the electrical properties of (1 ?#xA0;x)BNT-xLNN ceramics were investigated. The relaxor behavior of (1 ?#xA0;x)BNT-xLNN ceramics gradually enhances, and the depolarization temperature decreases with increasing LNN content. The largest ?_m value and the lowest dielectric loss are demonstrated for the ceramic with x = 0.02. Moreover, the (1 ?#xA0;x)BNT-xLNN ceramic with x = 0.02 also has an enhanced piezoelectric behavior of d₃₃ ?#xA0;113 pC/N and k_p ?#xA0;21.6 % . Therefore, the introduction of LNN could be an effective way to improve the electrical behavior of BNT ceramics.