Electrical Properties of Ca-modified Na0.5Bi0.5TiO3-BaTiO3 ceramics

被引：17
作者：
Jan, Saeed Ullah [1 ]
Zeb, Aurang [1 ]
Milne, Steven J. [1 ]
机构：
[1] Univ Leeds, Inst Mat Res, Leeds LS2 9JT, W Yorkshire, England
来源：
CERAMICS INTERNATIONAL | 2014年 / 40卷 / 10期
关键词：
Dielectric properties; Piezoelectric properties; Perovskites; BaTiO3 and titanates; PHASE-TRANSITIONS; DIELECTRIC-PROPERTIES; BARIUM-TITANATE; BEHAVIOR; SYSTEM; TEM;
D O I：
10.1016/j.ceramint.2014.06.107
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：
Ceramics in the system (1-x)Na0.5Bi0.5TiO3-xBa(0.80)Ca(0.20)TiO(3) demonstrate a phase boundary between pseudo-cubic and tetragonal at 0.1 < x < 0.2. There was a gradual convergence in the temperatures of a frequency-dependent inflection and peak in relative permittivity-temperature plots with increasing x: for x=0.5 and 0.6, normal relaxor-like behaviour was observed, with T-m similar to 150 degrees C (1 kHz). Constriction in the polarisation-electric field hysteresis loops for the phase boundary composition x=0.1 was consistent with an electric field-induced phase transition, giving rise to an electromechanical strain, similar to 0.25 % at 40 kV/cm and high-field d(33)* similar to 640 pm/V. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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收藏
页码：15439 / 15445
页数：7
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