| GaPO4晶体弹性与压电性能的研究 |
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| 引用本文： | 王越,孙云旭,蒋毅坚,杨赤.GaPO4晶体弹性与压电性能的研究[J].人工晶体学报,2001,30(2):178-184. |
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| 作者姓名： | 王越 孙云旭 蒋毅坚 杨赤 |
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| 作者单位： | 1. 北京工业大学应用数理学院,
2. 中国科学院大气物理研究所, |
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| 基金项目： | 北京工业大学青年教师基金资助项目 |
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| 摘 要： | 本文首先绘制了GaPO4晶体在（100），（010），（001）三个主晶面内慢度分布曲线，计算了声速的最大值，并与水晶进行了比较，发现GaPO4晶体的声速普遍小于水晶的声速；其次还探讨了GaPo4晶体压电系数d11及机电耦合系数k11随空间方向变化的规律，得到了GaPO4晶体d11,k11的最大值及其方向，并分别和水晶进行了比较，发现GaPO4晶体的d11和k11都远大于水晶的。这些结果将对GaPO4晶体在压电器件和声光器件的设计，开发及利用等方面具有一定的理论指导作用。
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| 关 键 词： | 压电材料 磷酸镓晶体 克里斯托夫方程 压电系数 机电耦合系数 弹性 压电性能 |
| 文章编号： | 1000-985X(2001)-02-0178-07 |
| 修稿时间： | 2000年9月4日 |
Study on Elastic and
Piezoelectric Properties of GaPO4 Crystal |
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| WANG Yue,SUN Yun-xu,JIANG Yi-jian,YANG Chi.Study on Elastic and
Piezoelectric Properties of GaPO4 Crystal[J].Journal of Synthetic Crystals,2001,30(2):178-184. |
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| Authors: | WANG Yue SUN Yun-xu JIANG Yi-jian YANG Chi |
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| Abstract: | In this paper,the curves of slowness in (100),(010) and (001) for GaPO4 have been plotted.The maximum of acoustic velocities and their directions have also been gained,and compared with that of α-SiO2.Crystal orientation dependence of piezoelectric constant d11 and electromechanical coupling factor k11 have been calculated phenomenologically.The maximum of longitudinal piezoelectric constant d11 and electromechanical coupling factor k11 are obtained.The orientation was also determined.It is found that the d11 and k11 of GaPO4 are much larger than that of SiO2 and the velocity of acoustic wave is smaller than that of SiO2.These results will give certain directions for the use of GaPO4 in piezoelectrical and acoustic-optical devices. |
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