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| 弛豫铁电0.24PIN-0.47PMN-0.29PT单晶声表面波性能研究 | |
| 引用本文： | 李秀明,吴广涛,张锐. 弛豫铁电0.24PIN-0.47PMN-0.29PT单晶声表面波性能研究[J]. 人工晶体学报, 2021, 50(2): 260-265 |
| 作者姓名： | 李秀明 吴广涛 张锐 |
| 作者单位： | 大庆师范学院机电工程学院,大庆 163712;哈尔滨工业大学物理系,哈尔滨 150080 |
| 基金项目： | 国家自然科学基金(11547171) |
| 摘 要： | 随着信息技术的迅速发展,对声表面波器件的要求也进一步提高.为寻找性能更加优异的声表面波器件基底材料,本文利用分波解法对室温下[001]c及[011]c极化弛豫铁电0.24PIN-0.47PMN-0.29PT单晶的声表面波性能进行研究.利用[001]c及[011]c极化弛豫铁电0.24PIN-0.47PMN-0.29PT... |
| 关 键 词： | 弛豫铁电单晶 0.24PIN-0.47PMN-0.29PT 声表面波 相速度 机电耦合系数 能流角 |
| 收稿时间： | 2020-11-26 |
Surface Acoustic Waves Properties of 0.24PIN-0.47PMN-0.29PT Relaxor Ferroelectric Single Crystals |
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| LI Xiuming,WU Guangtao,ZHANG Rui. Surface Acoustic Waves Properties of 0.24PIN-0.47PMN-0.29PT Relaxor Ferroelectric Single Crystals[J]. Journal of Synthetic Crystals, 2021, 50(2): 260-265 | |
| Authors: | LI Xiuming WU Guangtao ZHANG Rui |
| Affiliation: | 1.School of Mechatronics Engineering, Daqing Normal University, Daqing 163712, China; 2.Department of Physics, Harbin Institute of Technology, Harbin 150080, China |
| Abstract: | With the rapid development of the information technology, the requirements for surface acoustic wave devices are also increased. In order to find substrate materials with excellent surface acoustic wave performances, a detail theoretical analysis was conducted on the surface acoustic wave properties in 0.24PIN-0.47PMN-0.29PT single crystals along [001]c and [011]c at room temperature using the partial wave method. The relaxor ferroelectric single crystals xPb(In1/2Nb1/2)O3-yPb(Mg1/3Nb2/3)O3-(1-x-y)PbTiO3 with compositions near the morphotropic phase boundary have comparably large piezoelectric and electromechanical properties and much higher Curie temperature. From the complete sets of elastic, piezoelectric and dielectric properties of [001]c and [011]c poled 0.24PIN-0.47PMN-0.29PT single crystals, the orientational dependence of surface acoustic wave phase velocities, electromechanical coupling coefficients and power flow angles was calculated by the Christoffel equation with semi-infinite boundary conditions. The results indicate that 0.24PIN-0.47PMN-0.29PT single crystals along [011]c has better surface acoustic wave properties than the 0.24PIN-0.47PMN-0.29PT single crystals along [001]c. It is very apparent that the surface acoustic wave electromechanical coupling coefficient for 0.24PIN-0.47PMN-0.29PT single crystal along [011]c is dramatically higher compared to along [001]c single crystal. Also, maximum power flow angle for 0.24PIN-0.47PMN-0.29PT single crystals along [011]c is apparently bigger than 0.24PIN-0.47PMN-0.29PT single crystals along [001]c. Therefore, the 0.24PIN-0.47PMN-0.29PT single crystal along [011]c with excellent surface acoustic wave properties and temperature stability is very suitable in making surface acoustic wave devices. |
| Keywords: | relaxor ferroelectric single crystal 0.24PIN-0.47PMN-0.29PT surface acoustic wave phase velocity electromechanical coupling coefficient power flow angle |
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