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| 布里渊散射决定0.67Pb(Mg_(1/3)Nb_(2/3))O_3-0.33PbTiO_3单晶的弹性、压电和介电常数(英文) | |
| 引用本文： | 刘玉龙,杨洋,孙靖雅,朱恪,徐正奎,萧季驹,罗毫甦.布里渊散射决定0.67Pb(Mg_(1/3)Nb_(2/3))O_3-0.33PbTiO_3单晶的弹性、压电和介电常数(英文)[J].光散射学报,2009,21(2). |
| 作者姓名： | 刘玉龙 杨洋 孙靖雅 朱恪 徐正奎 萧季驹 罗毫甦 |
| 作者单位： | 1. 中国科学院物理研究所,北京,100190 2. 香港城市大学物理材料科学系,中国香港 3. 中国科学院上海硅酸盐所,上海,200050 |
| 基金项目： | 国家自然科学基金，Research Grants Council of Hong Kong |
| 摘 要： | 我们报道了用高分辨布里渊散射,确定0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3单晶中的弹性、压电和介电常数.所有的实验数据都是在一块沿001]方向的极化的单晶样品上获得的。我们实验中得到的这些常数的数值和以往超声共振技术获得的数值相似。我们还研究了压缩模和剪切模在(010)和(001)平面内的方向依赖性。TA1和TA2模式的强度对散射角度有很强列依赖性。在散射角度为45°~65°内,一个新的峰出现在~18 GHz附近。它可能与晶体中的微观不均匀性或者局域微结构相关。 |
| 关 键 词： | 驰豫型铁电体 PMN-PT单晶 布里渊散射 |
Determination of Elastic,Piezoelectric and Dielectric Constants of 0.67Pb(Mg_(1/3)Nb_(2/3))O_3-0.33PbTiO_3 Single Crystal by Brillouin Scattering |
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| LIU Yu-long,YANG Yang,SUN Jing-ya,ZHU Ke,XU Zheng-kui,Guei Gu-siu,LUO Hao-su.Determination of Elastic,Piezoelectric and Dielectric Constants of 0.67Pb(Mg_(1/3)Nb_(2/3))O_3-0.33PbTiO_3 Single Crystal by Brillouin Scattering[J].Chinese Journal of Light Scattering,2009,21(2). | |
| Authors: | LIU Yu-long YANG Yang SUN Jing-ya ZHU Ke XU Zheng-kui Guei Gu-siu LUO Hao-su |
| Institution: | 1.Institute of Physics;Chinese Academy of Sciences;Beijing 100190;China;2.Department of Physics and Materials Science;City University of Hong Kong;3.Shanghai Institute of Ceramics;Shanghai 200050;China |
| Abstract: | We report the determination of the complete set of elastic,piezoelectric and dielectric constants of 0.67PMN-0.33PT crystal by using high-resolution Brillouin scattering in which all experimental data were collected from only one -poled crystal sample.The values of determined constants are similar to those previously determined from four crystal samples by using a hybrid method combining both ultrasonic and resonant techniques.The directional dependence of the compressional and shear modulus of the crystal ... |
| Keywords: | relaxor ferroelectrics PMN-PT single crystal Brillouin Scattering |
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