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| Improved Ligand-Field Calculation of Energy Spectrum and R-Line Thermal Shift of MgO：Cr^3＋ | |
| 引用本文： | References：. Improved Ligand-Field Calculation of Energy Spectrum and R-Line Thermal Shift of MgO：Cr^3＋[J]. 理论物理通讯, 2007, 47(5): 937-943 |
| 作者姓名： | References： |
| 作者单位： | [1]College of Information Engineering, Chengdu University of Technology, Chengdu 610059, China [2]Department of Applied Physics, Sichuan University, Chengdu 610065, China |
| 摘 要： | Traditional ligand-field theory has to be improved by taking into account both pure electronic contribution and electron-phonon interaction one （including lattice-vibrational relaxation energy）. By means of improved ligand-field theory, the R-line, t^3 2^2 T1 lines, t^2 2（^3 T1）e^4 T2, and t^2 2（^3T1）e^4T1 bands, ground-state g factor, four strain-induced level- splittings, and R-line thermal shift of MgO：Cr^3＋ have been calculated. The results are in very good agreement with the experimental data. It is found that for MgO：Cr^3＋, the contributions due to electron-phonon interaction （EPI） come from the first-order term. In thermal shift of R-line of MgO：Cr^3＋, the temperature-dependent contribution due to EPI is dominant. |
| 关 键 词： | 改良配位场理论 电子-光子相互作用 能谱 氧化镁 铬离子 热漂移 |
| 修稿时间： | 2006-06-06 |
Improved Ligand-Field Calculation of Energy Spectrum and R-Line Thermal Shift of MgO:Cr3+ |
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| ZHANG Zheng-Jie,MA Dong-Ping,. Improved Ligand-Field Calculation of Energy Spectrum and R-Line Thermal Shift of MgO:Cr3+[J]. Communications in Theoretical Physics, 2007, 47(5): 937-943 | |
| Authors: | ZHANG Zheng-Jie MA Dong-Ping |
| Abstract: | Traditional ligand-field theory has to be improved by taking into account both pure electronic contribution and electron-phonon interaction one (including lattice-vibrational relaxation energy). By means of improved ligand-field theory, the R-line, t322T1 lines, t22(3T1)e4T2, and t22(3T1)e4T1 bands, ground-state g factor, four strain-induced levelsplittings, and R-line thermalshift of MgOCr3 have been calculated. The results are in very good agreement with the experimental data. It is found that for MgOCr3 , the contributions due to electron-phonon interaction (EPI) come from the first-order term. In thermal shift of R-line of MgOCr3 , the temperature-dependent contribution due to EPI is dominant. |
| Keywords: | improved ligand-field theory electron-phonon interaction energy spectrum strain-induced splitting thermal shift g factor |
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