| 铁原子簇的磁性和几何结构研究 |
| |
| 引用本文： | 董建敏,孙美坤.铁原子簇的磁性和几何结构研究[J].青岛大学学报(自然科学版),2000,13(3):59-61. |
| |
| 作者姓名： | 董建敏 孙美坤 |
| |
| 作者单位： | 山东大学! 济南 250100，山东大学! 济南 250100，山东大学! 济南 250100，山东大学! 济南 250100 |
| |
| 摘 要： | 用ＭＳ－Ｘα方法研究了Ｆｅ８原子簇（具有Ｄ６ｈ对称）和Ｆｅ１５原子簇（具有Ｏｈ对称）的电子结构，结果表明：⑴两种原子簇中的Ｆｅ原子磁矩及其ｄ能带中的交换劈裂性质互不相同；⑵两类原子簇中的电荷分布不是均匀的，电荷倾向于从外围原子向内部原子上转移，并且被转移电子的自旋方向（正自旋或负自旋）与原子簇的对称性质密切相关。
|
| 关 键 词： | 铁原子簇 电子结构 原子磁矩 磁性 几何结构 |
STUDY ON THE EXCHANGE SPLITTING AND MAGNETISM OF IRON CLUSTERS |
| |
| DONG Jian-min,SUN Mei-kun,WANG Shou-guo,LI Hua.STUDY ON THE EXCHANGE SPLITTING AND MAGNETISM OF IRON CLUSTERS[J].Journal of Qingdao University(Natural Science Edition),2000,13(3):59-61. |
| |
| Authors: | DONG Jian-min SUN Mei-kun WANG Shou-guo LI Hua |
| |
| Abstract: | The electronic structures of cluster Fe8 with D6h symmetry and Fe15 with Oh sysmmetry have been studied by MS-X( method..The results show that(1) the exchange splittings of the d-band and the magnetic moments of the Fe-atoms are different in the two clusters;(2)the change distribution in both clusters is not uniform,showing that the electrons are transferred from peripheral atoms to inner atoms,and the spin-direction(up or down)of the electrons transferred is in accordance with the symmetric characteristics of the clusters. |
| |
| Keywords: | iron atom cluster electronic structure symmetry exchange splitting |
| 本文献已被 CNKI 维普 等数据库收录！ |
