Effect of crystalline structure and impurity content of C60 thin films on the order/disorder phase transition

Eugene A. Katz, David Faiman, Svetlana Shtutina, Aleksandra P. Isakina, Konstantin A. Yagotintsev

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Near the temperature of 260 K, C60 crystal is known to undergo a first order phase transition, associated with changes in molecular rotations. The present paper reports the effect of the crystalline structure and impurity content of C60 thin films on their structural behavior near this phase transition. Polycrystalline C60 films with different grain sizes and oxygen content were obtained by varying the conditions of their vacuum deposition and post-grown exposure. Temperature-resolved X-ray diffraction in the range 300 - 15 K was used to determine the lattice parameter and its changes near the phase transition temperature. Decrease in grain sizes and increase in oxygen content of the films are found to lead to a gradual reduction in the discontinuity in lattice parameter and the transition temperature.

Original languageEnglish
Article number761
Pages (from-to)W7.6.1-W7.6.6
JournalMaterials Research Society Symposium Proceedings
Volume675
DOIs
StatePublished - 1 Jan 2001
EventNanotubes, Fullerenes, Nanostructured and Disordered Carbon - San Francisco, CA, United States
Duration: 17 Apr 200120 Apr 2001

ASJC Scopus subject areas

  • Materials Science (all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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