Characterization of the bismuth-based piezoelectric ceramic system (1-x)Bi(Mg1/2Zr1/2)O3-xPbTiO3

被引:3
作者
Shabbir, G. [1 ]
Qureshi, A. H. [2 ]
机构
[1] PINSTECH, Div Phys, Directorate Sci, Islamabad 45650, Pakistan
[2] PINSTECH, Mat Div, Islamabad, Pakistan
来源
HIGH-PERFORMANCE CERAMICS V, PTS 1 AND 2 | 2008年 / 368-372卷
关键词
piezoelectric ceramics; diffuse phase transition; morphotropic phase boundary;
D O I
10.4028/www.scientific.net/KEM.368-372.33
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
Dielectric properties and structural morphology of the SC2O3 free and reduced lead content piezoelectric ceramic system, (1-x)Bi(Mg1/2Zr1/2)O-3-xPbTiO(3) (BMZ-xPT), were investigated in this study. The average grain size of the fresh fractured surfaces was of the order of <= 1 mu m to similar to 3 mu m. The dielectric constant, loss tangent, Curie temperature, remnant polarization, coercive field, piezoelectric coefficient, and the planer coupling constant of ceramics in the vicinity of the morphotropic phase boundary (MPB) (x similar to 0.55) were, similar to 1450, 0.0952, similar to 553 K, 29 (mu C/cm(2)), 23 (kV/cm), similar to 185 pC/N, and similar to 30%, respectively. It was observed that with decreasing PbTiO3 contents the phase transition anomaly became broadened. The position of the dielectric constant maximum did not show any significant variation with probe frequency, exhibiting character of diffuse phase transition like many other disordered perovskites.
引用
收藏
页码:33 / +
页数:2
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