Grain size effect on piezoelectric and ferroelectric properties of BaTiO3 ceramics

被引：236
|
作者：
Huan, Yu [1 ]
Wang, Xiaohui [1 ]
Fang, Jian [1 ]
Li, Longtu [1 ]
机构：
[1] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2014年 / 34卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Barium titanate; Grain size; Piezoelectric and ferroelectric properties; BARIUM-TITANATE CERAMICS; NANOCRYSTALLINE CERAMICS; DIELECTRIC-PROPERTIES;
D O I：
10.1016/j.jeurceramsoc.2013.11.030
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：
A series of dense barium titanate (BaTiO3, BTO) ceramics with different grain sizes (GS) were prepared by two-step sintering method. The effect of GS on piezoelectric coefficient (d(33)) and planar electromechanical coupling factor (k(p)) displayed a trend similar to that on relative permittivity (epsilon'). The values of d(33), k(p) and epsilon' increased significantly with decreasing GS, reaching maximum values (epsilon' = 6079, d(33) = 519 pC/N and k(p) =39.5%) at approximately 1 mu m, and then decreased rapidly with further decreasing GS. The results revealed that high-performance BTO ceramics could be effectively prepared by controlling GS. Polarization electric field hysteresis loops and temperature dependence of epsilon' were also investigated. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1445 / 1448
页数：4
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