中国物理B ›› 2010, Vol. 19 ›› Issue (3): 33604-033604.doi: 10.1088/1674-1056/19/3/033604

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Density functional calculations on the geometric structure and properties of the 3d transition metal atom doped endohedral fullerene M@C20F20 (M= Sc--Ni)

唐春梅1, 朱卫华1, 邓开明2   

  1. (1)College of Science, Hohai University, Nanjing 210098, China; (2)Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China
  • 收稿日期:2009-03-02 修回日期:2009-05-05 出版日期:2010-03-15 发布日期:2010-03-15
  • 基金资助:
    Project supported by the Research Starting Foundation of Hohai University (Grant No. 2084/40801130), the Natural Science Foundation of Hohai University (Grant Nos. 2008431211 and 2008430311), the Excellent Innovation Personal Support Plan of Hohai University, the Basic Scientific Research Foundation of National Central, and the Special Foundation of the Natural Natural Science (Grant No. 10947132).

Density functional calculations on the geometric structure and properties of the 3d transition metal atom doped endohedral fullerene M@C20F20 (M= Sc--Ni)

Tang Chun-Mei(唐春梅)a), Zhu Wei-Hua(朱卫华)a), and Deng Kai-Ming(邓开明)b)   

  1. a College of Science, Hohai University, Nanjing 210098, China; b Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China
  • Received:2009-03-02 Revised:2009-05-05 Online:2010-03-15 Published:2010-03-15
  • Supported by:
    Project supported by the Research Starting Foundation of Hohai University (Grant No. 2084/40801130), the Natural Science Foundation of Hohai University (Grant Nos. 2008431211 and 2008430311), the Excellent Innovation Personal Support Plan of Hohai University, the Basic Scientific Research Foundation of National Central, and the Special Foundation of the Natural Natural Science (Grant No. 10947132).

摘要: This paper uses the generalised gradient approximation based on density functional theory to analyse the geometric structure and properties of the 3d transition metal atom doped endohedral fullerene M@C20F20 (M= Sc--Ni). The geometric optimization shows that the cage centre is the most stable position for M, forming the structure named as M@C20F20-4. The inclusion energy, zero-point energy, and energy gap calculations tell us that Ni@C20F20-4 should be thermodynamically and kinetically stablest. M@C20F20-4 (M= Sc--Co) possesses high magnetic moments varied from 1 to 6~μB, while Ni@C20F20-4 is nonmagnetic. The Ni--C bond in Ni@C20F20-4 contains both the covalent and ionic characters.

Abstract: This paper uses the generalised gradient approximation based on density functional theory to analyse the geometric structure and properties of the 3d transition metal atom doped endohedral fullerene M@C20F20 (= Sc--Ni). The geometric optimization shows that the cage centre is the most stable position for M, forming the structure named as M@C20F20-4. The inclusion energy, zero-point energy, and energy gap calculations tell us that Ni@C20F20-4 should be thermodynamically and kinetically stablest. M@C20F20-4 (= Sc--Co) possesses high magnetic moments varied from 1 to 6 μB, while Ni@C20F20-4 is nonmagnetic. The Ni--C bond in Ni@C20F20-4 contains both the covalent and ionic characters.

Key words: M@C20F20, transition metal, magnetic property, density functional

中图分类号:  (Structure of fullerenes and related hollow and planar molecular structures)

  • 61.48.-c
71.20.Tx (Fullerenes and related materials; intercalation compounds) 71.15.Mb (Density functional theory, local density approximation, gradient and other corrections) 75.30.Cr (Saturation moments and magnetic susceptibilities) 36.40.Cg (Electronic and magnetic properties of clusters)