| Orientation effects on the bandgap and dispersion behavior of 0.91Pb（Zn_（1/3）Nb_（2/3））O_3-0.09PbTiO_3 single crystals |
| |
| 引用本文： | 赫崇君,付信夺,徐峰,王吉明,朱孔军,杜朝玲,刘友文.Orientation effects on the bandgap and dispersion behavior of 0.91Pb（Zn_（1/3）Nb_（2/3））O_3-0.09PbTiO_3 single crystals[J].中国物理 B,2012,21(5):54207-054207. |
| |
| 作者姓名： | 赫崇君 付信夺 徐峰 王吉明 朱孔军 杜朝玲 刘友文 |
| |
| 作者单位： | Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
| |
| 基金项目： | Project supported by the National Natural Science Foundation of China （Grant Nos. 60808026, 11174147, 50872053, 50902027 and 11004103）, the Specialized Research Fund for the Doctoral Program of Higher Education, China （Grant No. 20093218120030）, the Nanjing University of Aeronautics and Astronautics Research Funding, China （Grant No. NP2011037）, the Program for New Century Excellent Talents in University, China （Grant No. NCET-10-0070）, the Prior Project in Key Science ＆ Technology Program of Zhejiang Province, China （Grant No. 2009C11144）, and the Cultivation Fund of the Key Scientific and Technical Innovation Project of Ministry of Education of China （Grant No. 707031）. |
| |
| 摘 要： | 0.91Pb（Zn1/3Nb2/3）O3-0.09PbTiO 3（PZN-9%PT） single crystals with different orientations are investigated by using a spectroscopic ellipsometer,and the refractive indices and the extinction coefficients are obtained.The Sellmeier dispersion equations for the refractive indices are obtained by the least square fitting,which can be used to calculate the refractive indices in a low absorption wavelength range.Average Sellmeier oscillator parameters E o,位 o,S o,and E d are calculated by fitting with the single-term oscillator equation,which are related directly to the electronic energy band structure.The optical energy bandgaps are obtained from the absorption coefficient spectra.Our results show that the optical properties of 001] and 111] poled crystals are very similar,but quite different from those of the 011] poled crystal.
|
| 关 键 词： | 单晶 带隙 取向 最小二乘拟合 电子能带结构 拟合计算 折射率 消光系数 |
| 收稿时间： | 2011-07-21 |
Orientation effects on the bandgap and dispersion behavior of 0.91Pb（Zn_（1/3）Nb_（2/3））O_3-0.09PbTiO_3 single crystals |
| |
| He Chong-Jun,Fu Xin-Duo,Xu Feng,Wang Ji-Ming,Zhu Kong-Jun,Du Chao-Ling,Liu You-Wen.Orientation effects on the bandgap and dispersion behavior of 0.91Pb（Zn_（1/3）Nb_（2/3））O_3-0.09PbTiO_3 single crystals[J].Chinese Physics B,2012,21(5):54207-054207. |
| |
| Authors: | He Chong-Jun Fu Xin-Duo Xu Feng Wang Ji-Ming Zhu Kong-Jun Du Chao-Ling Liu You-Wen |
| |
| Institution: | Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
| |
| Abstract: | 0.91Pb(Zn1/3Nb2/3)O3--0.09PbTiO3 (PZN--9%PT) single crystals with different orientations are investigated by using a spectroscopic ellipsometer, and the refractive indices and the extinction coefficients are obtained. The Sellmeier dispersion equations for the refractive indices are obtained by the least square fitting, which can be used to calculate the refractive indices in a low absorption wavelength range. Average Sellmeier oscillator parameters Eo, λo, So, and Ed are calculated by fitting with the single-term oscillator equation, which are related directly to the electronic energy band structure. The optical energy bandgaps are obtained from the absorption coefficient spectra. Our results show that the optical properties of 001] and 111] poled crystals are very similar, but quite different from those of the 011] poled crystal. |
| |
| Keywords: | dispersion bandgap orientation |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |
|
