硅酸盐学报

PZT压电陶瓷机电耦合系数之间的关系

作者：王裕斌

单位：天津大学材料科学与工程系

关键词：压电陶瓷机电耦合系数压电方程

分类号：

出版年,卷(期):页码：1989,17(4):339-343

DOI：

摘要：

基于压电方程组导出了厚度伸缩振动机电耦合系数K_1与其它振动模式机电耦合系数的关系式。在满足d_(31)/d_(32)(?)S_(13)~F/S_(32)~E的条件下得到了K_t与K_(?)、K_(?)之间的简单关系式。利用此式计算了PZT压电陶瓷的K_(?)与组成的关系。理论计算结果与实验结果基本相符。

In this paper, based on the piezoelectric equations, an expression for coupling factor k, has been proposed in terms of K_(239) and other electro-physical parameters, By the assumption that d_(11)/d_(32)≌S_(12)~E/S_(329)~E one can obtain a simple relation between K_t and K_(32) as well as K_(?)·By means of this simple relation, K_t-composition reiationship in PZT system has been given. The calculated results are satisfactory in comparison with the experimental results.

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参考文献：

[1] D. A. Berlincourt, C. Cmolik, and H. Jaffe, Proc. IRE, 48[1] (1960) 220． [2] IRE Standards on Piezoelectric Crystal: Measurements of Piezoelectric Ceramice 1961, Proc. IRE, 49[7] (1961) 1161-1169． [3] IRE Standards on Piezoelectric Crystal, 1949, Proc. IRE, 37[12] (1949) 1378-1395． [4] Landolt-B(?)rnstein, Numerical Data and Functional Relationships in Science and Technology, Vol 3． Ferro-and Antiferroelectic Substances, Ed. by K. H. Hellwege and A. M. Hellwege, Springer-Verlag Berlin, Heidelberg, New York(1969) 78 and 81． [5] F. Jona and G. Shirane, Ferroelectric Crystals, Pergamon Press, Oxford, London(1962) 147． [6] H. Jaffe and D. A. Berlincourt, Proc. IEEE, 53[10] (1965) 1372．

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