| 光折变材料Cu∶KNSBN的晶格振动和d－d电子跃迁 |
| |
| 引用本文： | 夏海瑞,于慧,胡连军,王凯旋,赵壁英,陈焕矗,杨兆荷.光折变材料Cu∶KNSBN的晶格振动和d－d电子跃迁[J].光学学报,1996,16(10):1510-1515. |
| |
| 作者姓名： | 夏海瑞 于慧 胡连军 王凯旋 赵壁英 陈焕矗 杨兆荷 |
| |
| 作者单位： | 山东大学物理系，北京大学物化所，山东大学晶体所 |
| |
| 基金项目： | 国家自然科学基金,山东大学晶体所国家重点实验室资助 |
| |
| 摘 要： | 比较了铜掺杂钾钠铌酸锶钡（Ｃｕ∶ＫＮＳＢＮ）和钾钠铌酸锶钡（ＫＮＳＢＮ）两样品的晶格振动和ｄ－ｄ电子跃迁谱，对于拉曼（Ｒａｍａｎ）谱，Ａ１（ｚ）对称类的差别较小，Ｅ（ｘｙ）对称类的差别最大；对于红外反射谱，两对称类的均差别较大，认为Ｃｕ２＋部分填充了晶格Ａ位和Ｃ位，可见光范围内，ｄ－ｄ电子跃迁谱表明Ｃｕ２＋在晶体中形成两个深能级２．５０ｅＶ和２．６４ｅＶ。
|
| 关 键 词： | 钨青铜型晶体，拉曼谱和红外反射谱，光折变特性，d－d跃迁 |
| 收稿时间： | 1995/11/6 |
Lattice Vibrations and d d Electron Transitions of Photorefractive Material Cu∶KNSBN |
| |
| Xia Hairui,Yu Hui,Hu Lianjun.Lattice Vibrations and d d Electron Transitions of Photorefractive Material Cu∶KNSBN[J].Acta Optica Sinica,1996,16(10):1510-1515. |
| |
| Authors: | Xia Hairui Yu Hui Hu Lianjun |
| |
| Abstract: | The lattice vibrational spectra and d d electron transition spectra of the Cu∶KNSBN are compared with that of the KNSBN. The differences in the Raman spectra are little for the symmetry species A 1(z) and are very great for the symmetry species E(xy); but in the infrared reflectivity spectra, the differences are great for both A 1(z) and E(xy). It is considered that the lattice sites A and C are partly occupied by the Cu 2+ doped. The d d electron transition spectra in the visible range show that the two deep energy levels of 2.50 eV and 2.64 eV are formed by the Cu2+. |
| |
| Keywords: | tungsten bronze type crystals Raman spectra and infrared reflectivity spectra photorefractive property d d transition |
| 本文献已被 CNKI 等数据库收录！ |
