Electric dipole polarizabilities of Ni{sub 12-58}.
The electric dipole polarizabilities of Ni{sub 12}-Ni{sub 58} have been measured via a molecular beam deflection experiment. The majority of the clusters display polarizabilities alpha between 4 and 6 Angstroms cubed per atom, below the atomic value of 6.8 and above that predicted for ideal conducting spheres. Local extrema in alpha/atom are observed for certain Ni{sub n}. In particular, those clusters that adopt closely packed or quasispherical structures (e.g., Ni{sub 38}, Ni{sub 55}) display local minima, while Ni{sub 21}, Ni{sub 22}, Ni{sub 25}, and Ni{sub 49-54}, each an icosahedron or polyicosahedron with 'missing' atoms, display anomalously high values. The relationship between the polarizabilities of nickel clusters and their shapes and structures is discussed.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 949258
- Report Number(s):
- ANL/CHM/JA-39247
- Journal Information:
- J. Chem. Phys., Journal Name: J. Chem. Phys. Journal Issue: 13 ; Oct. 1, 2001 Vol. 115; ISSN JCPSA6; ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- ENGLISH
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OSTI ID:961172