Temperature and pressure dependence of orientational disorder and bonding in Li2CsC60

Serena Margadonna, Craig M. Brown, Kosmas Prassides, Andrew N. Fitch, Kenneth D. Knudsen, Tristan Le Bihan, Mohamed Mézouar, Ichiro Hirosawa, Katsumi Tanigaki

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The structural properties of the Li2CsC60 fulleride, which has been shown before to be face centred cubic with strong Li+-C interactions, were studied by synchrotron X-ray powder diffraction at both ambient and elevated pressures. We find no evidence for a monomer→polymer phase transition, analogous to that encountered in sodium intercalated fullerides, either on slow cooling to 150 K at ambient pressure or on the application of pressure to 6.14 GPa at ambient temperature, with the structure always remaining strictly face centred cubic. Analysis of the high-resolution diffraction data at elevated temperatures shows again no evidence for a phase transition with only a small weakening of the Li+-C interaction.

Original languageEnglish
Pages (from-to)157-163
Number of pages7
JournalInternational Journal of Inorganic Materials
Volume1
Issue number2
DOIs
Publication statusPublished - 1999 Aug

Keywords

  • A. fullerenes
  • C. X-ray diffraction
  • C. high pressure

ASJC Scopus subject areas

  • Materials Chemistry

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    Margadonna, S., Brown, C. M., Prassides, K., Fitch, A. N., Knudsen, K. D., Bihan, T. L., Mézouar, M., Hirosawa, I., & Tanigaki, K. (1999). Temperature and pressure dependence of orientational disorder and bonding in Li2CsC60. International Journal of Inorganic Materials, 1(2), 157-163. https://doi.org/10.1016/S1466-6049(99)00024-0