Electrical properties of Li doped sodium potassium niobate thick films prepared by a tape casting process

被引：28
作者：
Fu, Fang [1 ]
Shen, Bo [1 ]
Zhai, Jiwei [1 ]
Xu, Zhengkui [2 ]
Yao, Xi [1 ]
机构：
[1] Tongji Univ, Funct Mat Res Lab, Shanghai 200092, Peoples R China
[2] City Univ Hong Kong, Dept Phys & Mat Sci, Hong Kong, Hong Kong, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 25期
基金：
中国国家自然科学基金;
关键词：
Sodium potassium niobate; Thick films; Dielectric response; Piezoelectricity; PIEZOELECTRIC PROPERTIES; CERAMICS; (K; NA; LI)(NB; TA; SB)O-3; PIEZOCERAMICS;
D O I：
10.1016/j.jallcom.2011.04.029
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Lithium doped K0.5Na0.5NbO3 (abbreviated as KNN-xL, with x = 0.02, 0.04, 0.06, 0.08) thick films with a thickness of about 20 mu m were prepared by a tape casting process. The presence of Li ions promoted the microstructure of these thick films. Coercive fields (E-c) of the thick films decreased with the addition of Li ions. Two phase transition temperatures, corresponding to TO-T and T-C, were observed in theKNN-xL thick films. The sample with x = 0.06 exhibited an optimized value of d(33) (91.6 pm/V), which was attributed to the formation of a morphotropic phase boundary. (C) 2011 Elsevier B. V. All rights reserved.
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收藏
页码：7130 / 7133
页数：4
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