Electrical properties of Na0.5Bi2.5Ta2O9-Sr1-xBi2+yTa2O9 solid solution ceramics

被引：0
作者：
Takeda, H [1 ]
Aoyagi, R [1 ]
Okamura, S [1 ]
Shiosaki, T [1 ]
机构：
[1] Nara Inst Sci & Technol, Grad Sch Mat Sci, Ikoma, Nara 6300192, Japan
来源：
EURO CERAMICS VIII, PTS 1-3 | 2004年 / 264-268卷
关键词：
bismuth layered structured ferroelectrics; solid solution; ferroelectricity; piezoelectricity;
D O I：
10.4028/www.scientific.net/KEM.264-268.1241
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：
The (1-x)[Na0.5Bi2.5Ta2O9] - x[Sr0.8Bi2.15Ta2O9] (0less than or equal toxless than or equal to1) solid solution ceramics were synthesized using a conventional sintering method. All the ceramic samples consisted of a single phase with an orthorhombic symmetry A2(1)am and showed well-developed polarization-electric field hysteresis loops. The temperature dependence of the dielectric constant revealed that the Curie temperature T-c linearly decreased with ail increase in x from 780degreesC(x=0) to 410degreesC(x=1.0). The maximum electromechanical coupling factor (k(p)=8.6%) and mechanical quality factor (Q(m)=7000) with a radial-extensional mode were obtained for the x=0.75 samples.
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页码：1241 / 1244
页数：4
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