Study by X-ray diffraction and Raman spectroscopy of a Dy@C $_{\mathsf{82}}$ single crystal

T. Wågberg, P. Launois, R. Moret (), H. Huang, S. Yang, I. Li and Z. Tang

The European Physical Journal B: Condensed Matter and Complex Systems, 2003, vol. 35, issue 3, 371-375

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 $I\bar {4}3d)$ 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. Copyright Springer-Verlag Berlin/Heidelberg 2003

Date: 2003
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DOI: 10.1140/epjb/e2003-00289-9

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