| Abnormal piezoresponse behavior of Pb（Mg1／3Nb2／3）O3-30% PbTiO3 single crystal studied by high vacuum scanning force microscopy |
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| 作者姓名： | ZENGHuarong YINQingrui LIGuorong LUOHaosu XUZhenkui |
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| 作者单位： | [1]StateKeyLaboratoryofHighPerformanceCeramicsandSuperfineMicrostructures,ShanghaiInstituteofCeramics,ChineseAcademyofSciences,Shanghai200050,China [2]DepartmentofPhysicsandMaterialsScience,CityUniversityofHongKong,Kowloon,HongKong,China |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划)，国家重点基础研究发展计划(973计划) |
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| 摘 要： | The piezoresponse behavior dependence of the Pb(Mg1/3Nb2/3)O3-30%PbTi03 single crystal on the vacuum degree has been investigated by scanning force microscopy in the piezoresponse mode under high vacuum. Unusual piezoresponse behavior related to the screening charges compensation mechanism is observed on the (111) crystal face. The significant piezoresponse degradation behavior with low piezoresponse signal under high vacuum is attributed to the instability of the polarization state due to the insufficient compensation of the intrinsic screening charges for the polarization charges in PMN-30%PT single crystal. In contrast, the remarkable domain contrast of the sample at ambient pressure is owing to the dominant surface screening charges deriving from surface adsorption, which plays an important role in determining the stability of the domain behavior and in achieving the optimal properties.
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| 关 键 词： | 真空度 扫描力显微镜 铁电体 单晶体 Pb（Mg1／3Nb2／3）O3-30%PbTiO3 |
| 收稿时间： | 2003-03-26 |
Abnormal piezoresponse behavior of Pb(Mg1/3Nb2/3)O3-30%PbTiO3 single crystal studied by high vacuum scanning force microscopy |
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| ZENGHuarong YINQingrui LIGuorong LUOHaosu XUZhenkui.Abnormal piezoresponse behavior of Pb(Mg1/3Nb2/3)O3-30%PbTiO3 single crystal studied by high vacuum scanning force microscopy[J].Chinese Science Bulletin,2003,48(13):1386-1389. |
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| Authors: | Huarong Zeng Qingrui Yin Guorong Li Haosu Luo Zhenkui Xu |
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| Institution: | ZENG Huarong1, YIN Qingrui1, LI Guorong1, LUO Haosu1 & XU Zhenkui2 1. State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; 2. Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong, China |
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| Abstract: | The piezoresponse behavior dependence of the Pb(Mg1/3Nb2/3)O3-30%PbTiO3 single crystal on the vacuum degree has been investigated by scanning force microscopy in the piezoresponse mode under high vacuum. Unusual piezo- response behavior related to the screening charges compensation mechanism is observed on the (111) crystal face. The significant piezoresponse degradation behavior with low piezoresponse signal under high vacuum is attributed to the instability of the polarization state due to the insufficient compensation of the intrinsic screening charges for the polarization charges in PMN-30%PT single crystal. In contrast, the remarkable domain contrast of the sample at ambient pressure is owing to the dominant surface screening charges deriving from surface adsorption, which plays an important role in determining the stability of the domain behavior and in achieving the optimal properties. |
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| Keywords: | relaxor-type ferroelectrics single crystal PMN-PT piezo- response scanning force mircoscopy |
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