| Improved Ligand-Field Theoretical Calculations of R-Line Thermal Broadenings of NIgO：Cr^3＋ and MgO：V^2＋ |
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| 作者姓名： | ZHANG Zheng-Jie, MA Dong-Ping |
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| 作者单位： | [1]Department of Physics, Chengdu University of Technology, Chengdu 610059, China; [2]Department of Applied Physics, Sichuan University, Chengdu 610065, China |
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| 基金项目： | The project supported partially by National Natural Science Foundation of China under Grant No. 40841012 |
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| 摘 要： | With the values of parameters obtained from improved ligand-field theory, by taking into account all the irreducible representations and their components in EPI as well as all the levels and the admixtures of basic wavefunctions within d^3 electronic configuration, the R-line thermal broadenings （TB） of both MgO：Cr^3＋ and MgO：V^2＋ have microscopic-theoretically been calculated, The results are in very good agreement with the experimental data. It is found that the R-line TB of MgO：Cr^3＋ or MgO：V^2＋ comes from the first-order term of EPI. The elastic Raman scattering of acoustic phonons plays a dominant role in R-line TB of MgO：Cr^3＋ or MgO：V^2＋.
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| 关 键 词： | 配合基理论 电子声子交互作用 热加量 弹性黎曼散射 |
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