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| 沿[001]c极化0.70Pb(Mg_(1/3)Nb_(2/3))O_3-0.30PbTiO_3单晶的声表面波传播特性研究 | |
| 引用本文： | 李秀明,张锐,黄乃兴,吕天全,曹文武. 沿[001]c极化0.70Pb(Mg_(1/3)Nb_(2/3))O_3-0.30PbTiO_3单晶的声表面波传播特性研究[J]. 压电与声光, 2009, 31(6) |
| 作者姓名： | 李秀明 张锐 黄乃兴 吕天全 曹文武 |
| 作者单位： | 1. 哈尔滨工业大学,物理系,黑龙江,哈尔滨,150080;大庆师范学院,物理与电气信息工程系,黑龙江,大庆,163712 2. 哈尔滨工业大学,物理系,黑龙江,哈尔滨,150080 3. 宾夕法尼亚州立大学,材料研究所,宾夕法尼亚州,16802,美国 |
| 基金项目： | the NSFC，Program of the Ministry of Education of China for New Century Excellent Talents in University，Postdoctoral Science Research Developmental Foundation of Heilongjiang Province，SRF for ROCS |
| 摘 要： | 以室温下弛豫铁电单晶0.70Pb(Mg_(1/3)Nb_(2/3))O_3-0.30PbTiO_3(PMN-30%PT)的材料参数为基础,研究了该晶体沿[001]c极化情况下,不同切型的声表面波传播特性.研究发现,X-切型的PMN-30%PT单晶是一种具有低相速度和高机电耦合系数的材料,同时存在许多能流角为零的传播方向,综合来看,X-切型的127°左右方向是声表面波的最佳传播方向. |
| 关 键 词： | 声表面波 机电性能 压电晶体 |
Surface Acoustic Wave Propagation Properties in 0.70Pb(Mg_(1/3)Nb_(2/3))O_3-0.30PbTiO_3 Single Crystal Poled along[001]c |
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| LI Xiu-ming,ZHANG Rui,HUANG Nai-xing,LV Tian-quan,CAO Wen-wu. Surface Acoustic Wave Propagation Properties in 0.70Pb(Mg_(1/3)Nb_(2/3))O_3-0.30PbTiO_3 Single Crystal Poled along[001]c[J]. Piezoelectrics & Acoustooptics, 2009, 31(6) | |
| Authors: | LI Xiu-ming ZHANG Rui HUANG Nai-xing LV Tian-quan CAO Wen-wu |
| Abstract: | Surface acoustic wave (SAW) properties of relaxor-based 0.70Pb(Mg_(1/3)Nb_(2/3))O_3-0.30PbTiO_3 (PMN-30%PT) ferroelectric single crystals poled along[001]c cubic direction has been analyzed theoretically.It can be found that X-cut PMN-30%PT single crystal is a kind of material with low phase velocity and high electromechanical coupling coefficient,besides the single crystal possess some propagation directions with zero power flow angle (PFA).The results are based on the material parameters at room temperature.Theoretical results indicate that the direction about 127° canted from[001]c is the optimum direction for the X-cut[001]c poled PMN-30%PT single crystal in SAW device applications.SAW characteristic curves were also obtained for Y-cut and Z-cut PMN-30%PT single crystals. |
| Keywords: | surface acoustic wave electromechanical properties piezoelectric crystal |
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