| Optical Dispersion Behavior and Band Gap Energy of Relaxor Ferroelectric 0.92Pb（Mgl/3Nb2/3）O3-0.08PbTiO3 Single Crystal |
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| 作者姓名： | 林彦霆 任博 赵祥永 王飞飞 汪尧进 徐海清 林迪 罗豪甦 |
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| 作者单位： | [1]The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800 [2]Graduate School of the Chinese Academy of Sciences, Beijing 100049 |
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| 基金项目： | Supported by the National High-Tech Research and Development Program of China under Grant Nos 2008AA03Z410 and 2006AA03Z107, the National Natural Science Foundation of China under Grant Nos 60837003, 50777065 and 50602047, the Innovation Funds from Shanghai Institute of Ceramics of Chinese Academy of Sciences under Grant No SCX0608, and the Fund of National Engineering Research Center for Optoelectronic Crystalline Materials （2005DC105003） under Grant No 2007K05. |
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| 摘 要： | Refractive indices and extinction coefficients of O.92Pb（Mgl/3Nb2/3）O3-O.O8PbTiO~（PMN-O.OSPT） single crystaJ are investigated by variable angle spectroscopic ellipsometry （VASE） at different wavelengths. The parameters relative to the energy band structure are obtained by fitting to the single-oscillator dispersion equation, and the band gap energy is also deduced from the Tauc equation. Similar to most oxygen-octahedra ferroelectries, PMN-O.OSPT has the same dispersion behavior described by the refractive-index dispersion parameters.
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| 关 键 词： | 能量弛豫 光学带隙 分散行为 臭氧 中性粒细胞 单晶 色散方程 消光系数 |
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