| 稀土石榴石晶体磁光效应微观机制研究 |
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| 引用本文： | 张国营 杨杰慧. 稀土石榴石晶体磁光效应微观机制研究[J]. 南京大学学报(自然科学版), 1993, 29(4): 586-591 |
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| 作者姓名： | 张国营 杨杰慧 |
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| 作者单位： | 枣庄师专物理系，洛阳师专物理系，南京大学物理系 |
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| 摘 要： | 本文用量子理论计算了RE:YIG(RE=Ce,Pr)晶体薄膜中RE离子经晶场和交换作用劈裂后的能级和波函数及4f~n→4f~(n-1)5d~1电偶极跃迁几率,进而计算了该晶体的Faraday旋转,计算结果与实验完全符合.结果表明,RE:YIG晶体的磁光效应主要来自RE离子4f~n→4f~(n-1)5d~1的电偶极跃迁;晶场与交换作用起着重要作用.
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| 关 键 词： | Faraday旋转 电偶极跃迁 晶体场 交换作用 RE:YIG晶体 |
THEORETICAL STUDY ON THE MICROSCOPICAL ORIGIN OF THE FARADAY ROTATION IN Ce AND Pr SUBSTITUTED GARNETS |
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| Zhang Guoying. THEORETICAL STUDY ON THE MICROSCOPICAL ORIGIN OF THE FARADAY ROTATION IN Ce AND Pr SUBSTITUTED GARNETS[J]. Journal of Nanjing University: Nat Sci Ed, 1993, 29(4): 586-591 |
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| Authors: | Zhang Guoying |
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| Abstract: | The calculation of the Faraday rotation induced by the rare earth ions in the Ce and Pr substituted iron garnets based on the quantum theory is presented. The Faraday rotation contributed by the rare earth ions is caused mainly by the intra-ionic electrical dipole transitions between the 4f~n and 4f~(n-1)5d~1 configurations. The crystal field and the superexchange interaction are two crucial factors in determining the Faraday rotation. The theoretical results are in good agreement with those of experiments. |
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| Keywords: | Faraday rotation electrical dipole transition crystal field superexchange interaction RE-substituted iron garnets |
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