摘要
针对Ga3PO7晶体的压电特性,利用克里斯托夫方程计算了0~120℃范围内7个不同温度点的Ga3PO7的X、Y、Z切型传播角度为0°~180°的声表面波速度、机电耦合系数、能流角。结果表明,Z切型的Ga3PO7晶体受温度的影响较大,X和Y切型的温度稳定性相对Z切型较好,且这两种切型的SAW传播速度都与石英晶体相当。X切型中最佳传播角度情况下的机电耦合系数为0.532%,是石英晶体的2倍,而Y切型中最佳情况下的机电耦合系数可以达到1.041%,是石英晶体的4倍多。
In terms of the piezoelectric features of Ga3PO7 crystal,the surface acoustic wave（ SAW）properties including SAW propagation velocity,electromechanical coupling factor and power flow angle（ PFA） were calculated by solving Christopher equation. Under different temperature condition from 0 ℃to 120 ℃ and different SAW propagation direction from 0° to 180°,the calculations was carried out with X-cut,Y-cut and Z-cut type,respectively. The results show that the temperature has a relatively large effect on the Z-cut of Ga3PO7 crystal. Comparing with Z-cut,X-cut and Y-cut have relatively excellent temperature stability. Moreover,the SAW propagation velocities of X-cut and Y-cut are almost as low as that of Quartz. electromechanical coupling factors of best choice for propagation angle is 0. 532% and 1.041% for X-cut and Y-cut,which is 2 times and 4 times respectively of that of alpha quartz crystal.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2015年第6期1469-1474,共6页
Journal of Synthetic Crystals
基金
国家自然科学基金(51372140)
中国石油大学(北京)基础学科研究基金(01JB0169)
关键词
Ga3PO7晶体
声表面波
机电耦合系数
能流角
Ga3PO7 crystal
surface acoustic wave
electromechanical coupling factor
power flow angle
