Grain size effect on piezoelectric and ferroelectric properties of BaTiO3 ceramics

被引：221
|
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.
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页码：1445 / 1448
页数：4
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