| Determination of the sites of Fe atoms in Fe-substituted Mn12 |
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| 作者姓名： | 曹慧波 陈栋梁 何伦华 张俊荣 王芳卫 吴自玉 严启伟 |
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| 作者单位： | State Key Laboratory of Magnetism, Institute of Physics,
Chinese Academy of Sciences, Beijing 100080, China;Institute of High Energy Physics, Chinese Academy of Sciences,
Beijing 100049, China;State Key Laboratory of Magnetism, Institute of Physics,
Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory of Magnetism, Institute of Physics,
Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory of Magnetism, Institute of Physics,
Chinese Academy of Sciences, Beijing 100080, China;Institute of High Energy Physics, Chinese Academy of Sciences,
Beijing 100049, China;State Key Laboratory of Magnetism, Institute of Physics,
Chinese Academy of Sciences, Beijing 100080, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China
(Grant Nos~10375088 and 10505029). |
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| 摘 要： | In this paper neutron diffraction experiments were performed for Fe-substituted Mn12 in order to determine the sites of Fe atoms. The results of structure refinements for the sample with our accessed highest Fe content showed that all Fe atoms occupied Mn（3） sites in the Mn12 skeleton. The x-ray absorption fine structure experiments as well as multiple scattering simulations gave the same result. Thus we concluded that Fe atoms only occupied Mn（3） sites. This conclusion also means that Fe-substituted Mn12 series only includes the four single-molecule magnets of Mn12-xFexO12（CH3COO）16（H2O）4]·2CH3COOH·4H2O （x = 1, 2, 3, and 4）, denoted by Mn11Fe1, Mn10Fe2, MngFe3, and Mn8Fe4, respectively.
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| 关 键 词： | 单分子磁铁 铁取代Mn12 铁原子 取代位点 测定 中子衍射法 |
| 收稿时间： | 2006-06-26 |
| 修稿时间： | 8/8/2006 12:00:00 AM |
Determination of the sites of Fe atoms in Fe-substituted Mn12 |
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| Cao Hui-Bo,Chen Dong-Liang,He Lun-Hu,Zhang Jun-Rong,Wang Fang-Wei,Wu Zi-Yu and Yan Qi-Wei.Determination of the sites of Fe atoms in Fe-substituted Mn12[J].Chinese Physics B,2007,16(3):784-787. |
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| Authors: | Cao Hui-Bo Chen Dong-Liang He Lun-Hu Zhang Jun-Rong Wang Fang-Wei Wu Zi-Yu and Yan Qi-Wei |
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| Institution: | 1. State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Belting 100080, China ;2. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | In this paper neutron diffraction experiments were performed for Fe-substituted Mn12
in order to determine the sites of Fe atoms. The results of structure
refinements for the sample with our accessed highest Fe content showed that
all Fe atoms occupied Mn(3) sites in the Mn12 skeleton. The x-ray
absorption fine structure experiments as well as multiple scattering
simulations gave the same result. Thus we concluded that Fe atoms only
occupied Mn(3) sites. This conclusion also means that Fe-substituted
Mn12 series only includes the four single-molecule magnets of Mn12-xFexO12(CH3COO)16(H2O)4]\cdot
2CH3COOH\cdot 4H2O (x = 1, 2, 3, and 4), denoted by
Mn11Fe1, Mn10Fe2, Mn9Fe3, and
Mn8Fe4, respectively. |
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| Keywords: | single-molecule magnets neutron diffraction x-ray absorption fine structure |
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