| Cr3+离子在SrLaAlO4中电子顺磁共振参量的理论研究 |
| |
| 引用本文： | 王珏,董会宁,孟莎莎.Cr3+离子在SrLaAlO4中电子顺磁共振参量的理论研究[J].重庆邮电大学学报(自然科学版),2010,22(3):322-324. |
| |
| 作者姓名： | 王珏 董会宁 孟莎莎 |
| |
| 作者单位： | 重庆邮电大学应用物理研究所,重庆,400065;重庆邮电大学应用物理研究所,重庆,400065;重庆邮电大学应用物理研究所,重庆,400065 |
| |
| 基金项目： | 重庆市自然科学基金，重庆市教委项目，重庆邮电大学自然科学基金 |
| |
| 摘 要： | 电子顺磁共振谱(electron paramagnetic resonance,EPR)参量对杂质离子局域结构极为敏感,对EPR参量的理论研究可以用来确定材料的离子占位和缺陷结构等.从晶体场理论出发,用高阶微扰公式和晶体结构数据和重叠模型获得晶场参量,计算出Cr3+离子在八面体晶体SrLaAIO4中的的自旋哈密顿参量g因子和零场分裂参量D,计算中所用到的参量由该晶体的光谱和结构数据获得,计算结果和实验数据较为符合,并对计算结果进行了分析.
|
| 关 键 词： | 电子顺磁共振 晶体场理论 SrLaAlO4晶体 Cr3+离子 |
| 收稿时间： | 1/9/2009 12:00:00 AM |
Theoretical studies of the EPR parameters for Cr 3+ ion in SrLaALO 4 |
| |
| WANG Jue,DONG Hui-ning,MENG Sha-sha.Theoretical studies of the EPR parameters for Cr 3+ ion in SrLaALO 4[J].Journal of Chongqing University of Posts and Telecommunications,2010,22(3):322-324. |
| |
| Authors: | WANG Jue DONG Hui-ning MENG Sha-sha |
| |
| Institution: | Institute of Applied Physics, Chongqing University of Posts and Telecommunications, Chongqing 400065, P. R. China |
| |
| Abstract: | Electron paramagnetic resonance(EPR) parameters are sensitive to the local structure of the impurity ions. Theoretical studies on the EPR parameters can be used to ascertain the ion location and defect structure of the impurity ions.On the basis of the crystal-field theory, the spin Hamitonian parameters g and D of Cr 3+ ion in the octahedral crystal SrLaAlO4 were calculated by the aid of the high-order perturbation formulas and the crystal-field parameters obtained from the superposition model and the structural data. The parameters were obtained from the optical spectral and structural data of the studied crystal. The calculated results are in agreement with the observed values, with the reasonableness discussed. |
| |
| Keywords: | EPR spectrum Crystal-field SrLaAlO 4 Cr 3+ ion |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《重庆邮电大学学报(自然科学版)》浏览原始摘要信息 |
| 点击此处可从《重庆邮电大学学报(自然科学版)》下载免费的PDF全文 |
