Document 
Eur. Phys. J. B 35, 371-375 (2003)
DOI: 10.1140/epjb/e2003-00289-9
Study by X-ray diffraction and Raman spectroscopy of a
Dy@C
single crystal
T. Wågberg1, 2, P. Launois2, R. Moret2, H.J. Huang3, S.H. Yang3, I.L. Li4 and Z.K. Tang4
1 Department of Physics, Umeå University, 901 87 Umeå, Sweden
2 Laboratoire de Physique des Solides, UMR CNRS 8502, Université Paris-Sud, 91405 Orsay, France
3 Department of Chemistry, Hong Kong University of Science and Technology, Clear Water Bay, Hong-Kong, P.R. China
4 Department of Physics, and Institute of Nano Science and Technology, Hong Kong University of Science and Technology, Clear Water Bay, Hong-Kong, P.R. China
moret@lps.u-psud.fr
(Received 15 May 2003 / Received in final form 29 August 2003 Published online 15 October 2003)
Abstract
We report the first X-ray diffraction and Raman spectroscopy study of a
single crystal of the rare-earth endohedral fullerene Dy@C
82. The
lattice is found to be body-centered cubic (
a = 25.79 Å, space group
which is at variance with previous reports and confirms that
several types of structures can be stabilized in Dy@C
82. X-ray
diffraction/diffuse scattering methods reveal no low-temperature change down
to 12 K for the present structure. The Raman spectroscopy data are comparable
to those of other M@C
82 endohedral compounds. However, the Dy oxidation
state and the force constant of the low-frequency metal-cage stretching mode
do not follow the simple relationship observed before.
61.10.Nz - X-ray diffraction.
61.48.+c - Fullerenes and fullerene-related materials.
78.30.Na - Fullerenes and related materials .
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2003