| Co2+:ZnAl2O4晶体电子光谱及其2E态双重谱线结构的Jahn-Teller效应研究 |
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| 引用本文： | 杨子元.Co2+:ZnAl2O4晶体电子光谱及其2E态双重谱线结构的Jahn-Teller效应研究[J].光子学报,1997,26(4):298-302. |
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| 作者姓名： | 杨子元 |
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| 作者单位： | 宝鸡文理学院物理学系!宝鸡，721007 |
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| 基金项目： | 陕西省自然科学基金，宝鸡文理学院青年教师基金 |
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| 摘 要： | 在中间场耦合图象中,利用Racak不可约张量算符法和Wigner－Eckart定理,建立了3d7(C3v)电子组态的完全能量矩阵;利用该矩阵研究了Co2+:ZnAl2O4晶体的电子光谱,理论与观测十分吻合．首次定量地解释了2E态的双重谱线结构,并从理论上预言了4A2基态2.93cm-1的零场分裂(ZFS)．研究结果定量地表明,Jahn－Teller效应所致Co2+:ZnAl2O4晶体Co2+中心局域结构的畸变假设是合理的．
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| 关 键 词： | Co2+:ZnAl2O4 电子光谱 2E态双重谱线 Jahn-Teller效应 三角畸变 |
| 修稿时间： | 1996-02-27 |
INVESTIGATION OF THE ELECTRON SPECTRA AND JAHN－TELLER EFFECT OF THE DOUBLET SPECTRA STRUCTURE FOR 2E STATE IN Co2+:ZnAl2O4 CRYSTAL |
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| Yang Ziyuan.INVESTIGATION OF THE ELECTRON SPECTRA AND JAHN－TELLER EFFECT OF THE DOUBLET SPECTRA STRUCTURE FOR 2E STATE IN Co2+:ZnAl2O4 CRYSTAL[J].Acta Photonica Sinica,1997,26(4):298-302. |
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| Authors: | Yang Ziyuan |
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| Institution: | Department of physics, Baoji College of Arts and Science, Baoji 721007 |
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| Abstract: | In the intermediate crystal-field coupling scheme,the full energy matrices of C3v group for d7 configuration have been derived in terms of the Racah irreducible tensor operator technique and the Winger-Eckart theorm- The electron spectra of Co2+: ZnAl2O4 crystal have been calculated in terms of the full energy matrices, the calculated result has agreed well with the experimental findings, in particular, the double spectra structure of T state is interpreted first, and the ZFS of the ground state 4A2 about 2. 93cm-1 is predicted. The results show that the assumption of the trigonal distortion arised from Jahn-Teller effect is reasonable for Co2+: ZnAl2O4 crystal. |
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| Keywords: | Co2+: ZnAl2O4 Electron spectra Double spectra structure of the 2E state Jahn-Teller effect:Triqonal distortion |
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