Structure studies of C60 polymerized at low pressures
1997 (English)In: Fullerenes: Recent Advances in the Chemistry and Physics of Fullerenes and Related Materials, vol. 5, Pennington, NJ: The Electrochemical Society , 1997, 687-694 p.Conference paper (Refereed)
The structure and lattice properties of a polymerized C60 sample were investigated by X-ray powder diffraction over the range from liquid-nitrogen to room temperature. The aim of these studies was to establish the effect of low-pressure compression (up to 1.1 GPa) on the phase composition of the sample, to determine the structure of the phases involved, to obtain the variation of the lattice parameters with temperature, to observe eventual phase transformation in polymerized C60, and to elucidate the evolution of the orientational order with varying temperature. Analysis of the room-temperature diffraction patterns indicates that the sample contained at least two major phases, namely rhombohedral and and tetragonal with the polymerization array close to two-dimensional. Our data obtained on samples annealed at 300 C in the air allow us to conclude that polymerized C60 converts to a mixture of the fcc structure plus a new phase, presumably C60O.
Place, publisher, year, edition, pages
Pennington, NJ: The Electrochemical Society , 1997. 687-694 p.
, Electrochemical Society Proceedings, 97-42
Fullerenes, C60, structure, X-ray diffraction, XRD, thermal expansion, rhombohedral, tetragonal
Condensed Matter Physics
Research subject Physics
IdentifiersURN: urn:nbn:se:umu:diva-25822ISBN: 1-56677-192-7OAI: oai:DiVA.org:umu-25822DiVA: diva2:234076
Proceedings of the 192nd Meeting of the Electrochemical Society, Paris 1997; Symposium Fullerenes: Chemistry, Physics, and New Directions