Orientational disorder and the p-T phase diagram of fullerenes
1995 (English)In: Fullerenes: Recent Advances in the Chemistry and Physics of Fullerenes and Related Materials, volume 2: Proceedings of the 187th ECS Meeting, Symposium Fullerenes: Chemistry, Physics, and New Directions VII, Reno 1995, Pennington, NJ: The Electrochemical Society , 1995, 891-905 p.Conference paper (Refereed)
The translational and orientational structures of fullerenes are very sensitive to pressure, p, because of the weak intermolecular potentials. We have recently carried out high-p studies of the thermal conductivity lambda and the bulk modulus B of C60 and C70, and we show here how the p-T phase diagrams of these materials can be mapped from data for B and lambda and a knowledge of the structures at zero pressure. We discuss how B and lambda are modified by translational, rotational and orientational disorder in the materials, mainly showing examples related to the orientational substructure and its evolution with T and p in C60. We also discuss briefly the structures and phase diagrams of C70 and C61H2, and we show preliminary experimental results suggesting that the structure of high-p, high-T treated C60 is probably not polymeric as recently suggested by several groups.
Place, publisher, year, edition, pages
Pennington, NJ: The Electrochemical Society , 1995. 891-905 p.
, Electrochemical Society Proceedings, PV 95-10
Fullerenes, C60, C70, C61H2, high pressure, orientational structure, phase diagrams, thermal conductivity, bulk modulus, compressibility
Condensed Matter Physics
Research subject Physics
IdentifiersURN: urn:nbn:se:umu:diva-26176ISBN: 1-56677-104-8OAI: oai:DiVA.org:umu-26176DiVA: diva2:240642
Invited paper; editors Rodney S. Ruoff and Karl M. Kadish.2009-09-292009-09-292010-01-29