Optical Dispersion Behavior and Band Gap Energy of Relaxor Ferroelectric 0.92Pb(Mg1/3Nb2/3)O3-0.08PbTiO3 Single Crystal期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Optical Dispersion Behavior and Band Gap Energy of Relaxor Ferroelectric 0.92Pb(Mg_1/3Nb_2/3)O₃-0.08PbTiO₃ Single Crystal

Authors:	LIN Yan-Ting REN Bo ZHAO Xiang-Yong WANG Fei-Fei WANG Yao-Jin XU Hai-Qing LIN Di LUO Hao-Su

Affiliation:	The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800Graduate School of the Chinese Academy of Sciences, Beijing 100049

Abstract:	Refractive indices and extinction coefficients of 0.92Pb(Mg_1/3Nb_2/3)O₃-0.08PbTiO₃(PMN-0.08PT) single crystal 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 ferroelectrics, PMN-0.08PT has the same dispersion behavior described by the refractive-index dispersion parameters.

Keywords:	78.20.Ci 46.40.Cd 42.25.Lc

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