Composition dependent piezoelectric properties of Pb-free (Bi0.5Na0.5)(1-x)BaxTiO3 ceramics

被引：0
|
作者：
Sung, Y. S. [1 ]
Cho, J. H. [1 ]
Song, T. K. [1 ]
Jeong, S. J.
Song, J. S.
Kim, M. H. [1 ,2 ]
机构：
[1] Changwon Natl Univ, Sch Nano & Adv Mat Engn, Chang Won 641773, Gyeongnam, South Korea
[2] Catholic Univ, Seoul, South Korea
来源：
2007 SIXTEENTH IEEE INTERNATIONAL SYMPOSIUM ON THE APPLICATIONS OF FERROELECTRICS, VOLS 1 AND 2 | 2007年
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D O I：
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中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An optimum composition for maximizing piezoelectric properties Of (Bi0.5Na0.5)(1-x)BaxTiO3 ceramics was investigated within the range of x = 0 similar to 0.1 covering rhombohedral to tetragonal phase regions of the system. A perovskite structure with two different crystal symmetries depending on the Ba content was formed with no impurity phases. A range of morphotropic phase boundary dividing rhombohedral and tetragonal phase regions was found to exist at x = 0.05 similar to 0.08. As for piezoelectric properties the piezoelectric constant (d(33)) and the electromechanical coupling factor (K-p) showed a peak value at x = 0.065 within the range tested, which was 192 pC/N and 34 %, respectively, implying x = 0.065 as an optimum composition for piezoelectric (Bi0.5Na0.5)(1-x)BaxTiO3 ceramics.
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页码：689 / +
页数：2
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