Abstract.
We report the first X-ray diffraction and Raman spectroscopy study of a single crystal of the rare-earth endohedral fullerene Dy@C82. The lattice is found to be body-centered cubic (a = 25.79 Å, space group \(I\bar {4}3d)\) which is at variance with previous reports and confirms that several types of structures can be stabilized in Dy@C82. 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@C82 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.
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Received: 29 August 2003, Published online: 15 October 2003
PACS:
61.10.Nz X-ray diffraction - 61.48.+c Fullerenes and fullerene-related materials - 78.30.Na Fullerenes and related materials
T. Wågberg: Present address: Groupe de Dynamique des Phases Condensées, Université Montpellier II, Place E. Bataillon, CC026, 34095 Montpellier, France
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Wågberg, T., Launois, P., Moret, R. et al. Study by X-ray diffraction and Raman spectroscopy of a Dy@C \(_{\mathsf{82}}\) single crystal. Eur. Phys. J. B 35, 371–375 (2003). https://doi.org/10.1140/epjb/e2003-00289-9
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DOI: https://doi.org/10.1140/epjb/e2003-00289-9