| Nd:YIG磁和磁光性质理论研究 |
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| 引用本文： | 张芳,徐游,杨杰慧. Nd:YIG磁和磁光性质理论研究[J]. 东北师大学报(自然科学版), 2000, 32(2): 39-43 |
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| 作者姓名： | 张芳 徐游 杨杰慧 |
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| 作者单位： | 1. 洛阳师范学院物理系,河南,洛阳,471022
2. 南京大学物理系,江苏,南京,210008 |
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| 基金项目： | 国家自然科学基金!（19674023），河南省自然科学基金!（984052000） |
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| 摘 要： | 应用量子力学理论计算了Ｎｄ：ＹＩＧ和Ｎｄ＾３＋在ＯＫ～３００Ｋ热力学温度范围内的磁矩及它对Ｆａｒａｄａｙ偏转的贡献，结果表明Ｎｄ：ＹＩＧ稀土次点阵的磁光疚主要来源于离子内４ｆ＾３→４ｆ＾２５ｄ电偶极跃迁，晶场和交换作用是决定磁矩和磁光效应的两具重要因素。在计算基组态的晶场劈裂时，必须考虑＾４Ｉ谱项的４个多重态间的混合，否则会引起较大误差，计算结果与实验符合良好。
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| 关 键 词： | Faraday旋转 磁光性质 YIG磁 含钕石榴石 |
| 文章编号： | 1000-1832(2000)02-0039-05 |
| 修稿时间： | 1999-12-10 |
A theoretical study of magnetic and magneto-optical properties of the Nd:YIG |
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| ZHANG Fang,XU You,YANG Jie-hui. A theoretical study of magnetic and magneto-optical properties of the Nd:YIG[J]. Journal of Northeast Normal University (Natural Science Edition), 2000, 32(2): 39-43 |
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| Authors: | ZHANG Fang XU You YANG Jie-hui |
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| Abstract: | In the 0 K~300 K temperature range, the contributions of the Nd3+ ions in Nd: YIG on the magnetic moment and the Faraday rotation (FR) is calculated by using the quan- tum theory. The results show that the magneto - optical effects of the rare earth sublattice are mainly caused by the intra - ionic electric dipole transitions between the 4f3 and 4f25d configurations in the rare earth ions. The crystal field (CF) and the super - exchange inter- action are two crucial factors in the determination of the magnetic moment and the FR. In calculating the CF split level, all the four multiples of the ground term4I were included, oth- erwise a large error would be caused. The theoretical results are in good agreement with the experiments. |
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| Keywords: | Nd - substituted yttrium iron garnet magnetization Faraday rotation |
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