Ordering phenomena in C60-tetraphenylphosphonium bromide |
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| Authors: | P. Launois R. Moret N.-R. de Souza J.A. Azamar-Barrios A. Pénicaud |
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| Affiliation: | (1) Laboratoire de Physique des Solides (UMR 8502 du CNRS), batiment 510, Université Paris-Sud, 91405 Orsay Cedex, France, FR;(2) Centre de Recherche Paul Pascal, Université de Bordeaux I, avenue Schweitzer, 33600 Pessac, France, FR |
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| Abstract: | The fulleride salt C60-tetraphenylphosphonium bromide is investigated as a function of temperature by single crystal X-ray diffuse scattering and diffraction. At room temperature, the C60 orientational disorder is found to be more complex than previously expected. Moreover, a structural phase transition, due to the C60 orientational ordering, is evidenced around 120 K. Its relation with the stabilization of a static Jahn-Teller effect is discussed. Received 3 November 1999 |
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| Keywords: | PACS. 61.10.Eq X-ray scattering (including small-angle scattering) - 61.10.Nz Single-crystal and powder diffraction - 61.48.+c Fullerenes and fullerene-related materials |
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