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Chin. Phys. B, 2009, Vol. 18(4): 1436-1442    DOI: 10.1088/1674-1056/18/4/025
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

Structures, stabilities and magnetic moment of small copper-nickel clusters

Feng Cui-Ju(冯翠菊), Xue Yong-Hong(薛永红), Zhang Xiao-Yan(张晓燕), and Zhang Xiao-Chun(张晓春)
Department of Basic Courses, North China Institute of Science and Technology, Beijing 101601, China
Abstract  This paper obtains the lowest-energy geometric structures and the electronic and magnetic properties of small CuNiN clusters by using all-electron density functional theory. The calculated results reveal that the Cu atom prefers to occupy the apical site when N ≤ 9 and for the clusters with N=10, the Cu atom starts to encapsulate in the cage. The CuNi7 and CuNi9 are magic clusters. The magnetism correlates closely with the symmetry of the clusters. For these clusters, the charge tends to transfer from the nickel atoms to the copper atoms. It finds that the doping of Cu atom decreases the stability of pure NiN clusters.
Keywords:  first-principles calculations      density functional for molecules      copper-nickel clusters  
Received:  03 July 2008      Revised:  17 July 2008      Accepted manuscript online: 
PACS:  36.40.Cg (Electronic and magnetic properties of clusters)  
  36.40.Mr (Spectroscopy and geometrical structure of clusters)  
  36.40.Qv (Stability and fragmentation of clusters)  
  31.15.E-  
  33.15.Kr (Electric and magnetic moments (and derivatives), polarizability, and magnetic susceptibility)  

Cite this article: 

Feng Cui-Ju(冯翠菊), Xue Yong-Hong(薛永红), Zhang Xiao-Yan(张晓燕), and Zhang Xiao-Chun(张晓春) Structures, stabilities and magnetic moment of small copper-nickel clusters 2009 Chin. Phys. B 18 1436

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