Pressure dependence of the orientational ordering in solid C60

G. A. Samara, J. E. Schirber, B. Morosin, L. V. Hansen, D. Loy, A. P. Sylwester

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Abstract

Pressure studies of the molecular orientational ordering in solid C60 have exhibited three principal effects: (1) The simple-cubic (sc) to face-centered-cubic (fcc) ordering transition temperature (Tc=249 K) increases with pressure at a rate of 10.40.2 K/kbar corresponding to lnTc/d lna0=-22.8, where a0 is the lattice parameter; (2) pressure greatly reduces orientational fluctuations of the C60 molecules in the ordered low-temperature sc phase; and (3) the results suggest the presence of two ordering transitions instead of one near 249 K. The implications of these results are discussed.

Original languageEnglish (US)
Pages (from-to)3136-3139
Number of pages4
JournalPhysical review letters
Volume67
Issue number22
DOIs
StatePublished - Jan 1 1991
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Samara, G. A., Schirber, J. E., Morosin, B., Hansen, L. V., Loy, D., & Sylwester, A. P. (1991). Pressure dependence of the orientational ordering in solid C60. Physical review letters, 67(22), 3136-3139. https://doi.org/10.1103/PhysRevLett.67.3136