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| 含钕石榴石磁光效应的量子理论 | |
| 引用本文： | 张芳,王爱芳,李青华,杨杰慧.含钕石榴石磁光效应的量子理论[J].华中师范大学学报(自然科学版),2003,37(4):484-487. |
| 作者姓名： | 张芳 王爱芳 李青华 杨杰慧 |
| 作者单位： | 1. 青岛大学,师范学院,物理系,山东,青岛,266071 2. 山东大学,威海分校,山东,威海,264209 3. 洛阳师范学院,物理系,河南,洛阳,471022 |
| 基金项目： | 国家自然科学基金(10374054)，河南省自然科学基金(0111050600)，河南省教育厅自然科学基础研究资助项目(2000140009,20011400011). |
| 摘 要： | 应用量子理论分析了含钕石榴石中Nd^3 离子的磁光效应；计算了50～300K温度范围内离子的Faraday偏转及300K时Faraday偏转与光子能量的函数关系．计算结果表明，Nd：YIG中Nd^3 离子的磁光效应主要源于离子内4f^3→4f^25d的电偶极跃迁；离子能级由于旋轨耦合、晶场作用及超交换作用而劈裂；实验观察到的Faraday偏转为顺磁性的．计算结果与实验符合良好． |
| 关 键 词： | 含钕石榴石 磁光效应 Faraday偏转 |
| 文章编号： | 1000-1190(2003)04-0484-04 |
| 修稿时间： | 2003年5月23日 |
Quantum theory of the magneto-optical effect of Nd-substituted yttrium iron garnet |
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| ZHANG Fang,WANG Ai-fang,LI Qing-hua,YANG Jie-hui.Quantum theory of the magneto-optical effect of Nd-substituted yttrium iron garnet[J].Journal of Central China Normal University(Natural Sciences),2003,37(4):484-487. | |
| Authors: | ZHANG Fang WANG Ai-fang LI Qing-hua YANG Jie-hui |
| Institution: | ZHANG Fang~1,WANG Ai-fang~2,LI Qing-hua~1,YANG Jie-hui~3 |
| Abstract: | The magneto-optical effects of Nd~(3+) ions in Nd-substituted yttrium iron garnet are analyzed by using quantum theory. The calculation of Faraday rotation in the temperature range 50-300 K are presented. The calculation of the photon energy dependence of Faraday rotation at 300 K is presented as well. The results show that the magneto-optical effect of Nd~(3+) ions in Nd:YIG originates mainly from the intra-ionic electric dipole transitions between the 4f~3 and 4f~25d states split by the spin-orbit, crystal field, and superexchange interactions. The observed Faraday rotation is of the paramagnetic type. The calculated results are in good agreement with experiments. |
| Keywords: | Nd-substituted yttrium iron garnet magneto-optical effect Faraday rotation |
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