| Dipolar Interaction and Magnetic Ordering Ground State in Mn12 Molecular Magnet |
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| 引用本文： | 刘海青 王云平. Dipolar Interaction and Magnetic Ordering Ground State in Mn12 Molecular Magnet[J]. 中国物理快报, 2005, 22(12): 3166-3168 |
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| 作者姓名： | 刘海青 王云平 |
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| 作者单位： | Key Laboratory of Extreme Conditions Physics, Institute of Physics, Chinese Academy of Sciences, PO Box 603, Beijing 100080 |
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| 基金项目： | Supported partially by the National Natural Science Foundation of China under Grant No 10334080. |
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| 摘 要： | Here a direct calculation of the dipolar interaction in a single crystal Mn12, with all of Mn ions summed, shows that a transition between ferromagnetic and antiferromagnetic ground states takes place where the dimension along the α（b） axis versus the dimension along the c axis reaches a certain critical value. It is shown that the w ~ ~ ground state is dependent upon the shape of the specimen. The reason of the shape dependence of ordering is that dipolar interaction is of long-range nature and the sign of dipolar interaction is dependent on the direction.
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| 关 键 词： | 两极互感 磁力次序 分子磁体 Mn12 反铁磁性的 |
| 收稿时间： | 2005-08-25 |
| 修稿时间： | 2005-08-25 |
Dipolar Interaction and Magnetic Ordering Ground State in Mn12 Molecular Magnet |
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| LIU Hai-Qing, WANG Yun-Ping. Dipolar Interaction and Magnetic Ordering Ground State in Mn12 Molecular Magnet[J]. Chinese Physics Letters, 2005, 22(12): 3166-3168 |
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| Authors: | LIU Hai-Qing WANG Yun-Ping |
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