Sound velocity and attenuation in single-crystal C60

X. D. Shi, A. R. Kortan, J. M. Williams, A. M. Kini, B. M. Savall, P. M. Chaikin

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We report the studies of the elasticity of O60 single crystals. For sublimed fcc crystals, Youngs modulus has an 8% jump at the first-order transition at 260 K. At 160 K there is a frequency-dependent elastic anomaly resulting from time dependent stress relaxation. Comparison with rotation rates seen in NMR suggests that the dynamics below 260 K is more complex than jumps between equivalent molecular configurations. Solvent grown monoclinic crystals have a second-order transition at 242 K, while the 160-K glass transition remains unchanged.

    Original languageEnglish (US)
    Pages (from-to)827-830
    Number of pages4
    JournalPhysical Review Letters
    Volume68
    Issue number6
    DOIs
    StatePublished - 1992

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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