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Structure, disorder, and phase diagram of C60 up to 1 GPa and below 300 K
Umeå University, Faculty of Science and Technology, Physics.
Umeå University, Faculty of Science and Technology, Physics.
Umeå University, Faculty of Science and Technology, Physics.
Umeå University, Faculty of Science and Technology, Physics.
1994 (English)In: High Pressure in Material Science and Geoscience: Proceedings of the XXXII Annual Meeting of the European High Pressure Research Group, Brno 1994, Praha, Czech Republic: Prometheus , 1994, 109-112 p.Conference paper, Published paper (Refereed)
Abstract [en]

We have measured the compressibility and the thermal conductivity of C60 in the range below 300 K and up to 1 GPa (10 kbar). From the data obtained we have deduced the p-T phase diagram of C60. Literature data show that the ratio of pentagon-to-hexagon oriented molecules in the orientationally ordered phase decreases with increasing pressure, and from our data we conclude that C60 forms a new, completely "hexagon oriented" phase above 0.6 GPa at 150 K, or 1.2 GPa at 300 K. The glass transition temperature (90 K at atmospheric pressure) is found to increase by 54 K/GPa.

Place, publisher, year, edition, pages
Praha, Czech Republic: Prometheus , 1994. 109-112 p.
Keyword [en]
Fullerenes, C60, high pressure, phase diagram, thermal conductivity, compressibility, molecular orientation, orientational structure, glass transition, phase transition
National Category
Condensed Matter Physics
Research subject
Physics
Identifiers
URN: urn:nbn:se:umu:diva-26408ISBN: 80-85849-93-3 (print)OAI: oai:DiVA.org:umu-26408DiVA: diva2:248749
Note
Editors: J. Kamarád, Z. Arnold and A. Kapicka.Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2010-02-01

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