Gold-Coated Transition-Metal Anion [Mn13@Au20]- with Ultrahigh Magnetic Moment
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- 作者：Jinlan Wang ; Jaeil Bai ; Julius Jellinek ; Xiao Cheng Zeng
- 刊名：Journal of the American Chemical Society
- 出版年：2007
- 出版时间：April 11, 2007
- 年：2007
- 卷：129
- 期：14
- 页码：4110 - 4111
- 全文大小：63K
- 年卷期：v.129,no.14(April 11, 2007)
- ISSN：1520-5126
文摘
Structures and magnetic properties of gold-coated transition-metal clusters [Mn13@Au20]- and [Co13@Au20]- are studied within the framework of gradient-corrected density functional theory. The gold coating can result in either an enhanced or an attenuated effect on the magnetism of the core clusters. For [Mn13@Au20]-, the total magnetic moment is greatly enhanced to as high as 44 
B, more than 20-fold higher than that of the bare Mn13- cluster. For [Co13@Au20]-, however, the gold coating gives rise to an attenuation effect which leads to a reduction of the magnetic moment to 20B from 30B of the bare Co13- cluster.
B, more than 20-fold higher than that of the bare Mn13- cluster. For [Co13@Au20]-, however, the gold coating gives rise to an attenuation effect which leads to a reduction of the magnetic moment to 20B from 30B of the bare Co13- cluster.