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Dielectric properties of C60 under high pressure
Umeå University, Faculty of Science and Technology, Physics.
Umeå University, Faculty of Science and Technology, Physics.
2002 (English)In: Journal of Physics: Condensed Matter vol. 14 issue no. 44: Proceedings of the Joint 18th Conference on High Pressure Science and Technology (AIRAPT 18) and the 11th High Pressure Conference of China (HPCC-11), Beijing 2001, Bristol: Institute of Physics , 2002, 10437-10440 p.Conference paper (Refereed)
Abstract [en]

The dielectric properties of C60 have been measured as functions of temperature and hydrostatic pressure in the ranges 80–370 K and 0–0.8 GPa. The results show sharp anomalies at the rotational transition above 260 K and large relaxation peaks associated with the rotational 'glass transition'. From the measured frequencies of the loss peaks we calculate the energy barrier for molecular jumping between the 'pentagon' and 'hexagon' molecular orientations. The energy barrier increases by 13% GPa−1.

Place, publisher, year, edition, pages
Bristol: Institute of Physics , 2002. 10437-10440 p.
, Journal of Physics Condensed Matter, ISSN 0953-8984 ; 14
Keyword [en]
Fullerenes, C60, dielectric constant, high pressure, phase transitions, orientational transition, loss peaks, relaxation peaks, hydrostatic pressure, low temperature, fcc phase, molecular orientation, energy barrier
National Category
Condensed Matter Physics
Research subject
URN: urn:nbn:se:umu:diva-20915DOI: 10.1088/0953-8984/14/44/308OAI: diva2:209990
Editor: Guangtian ZouAvailable from: 2009-03-30 Created: 2009-03-30 Last updated: 2010-01-20

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Sundqvist, Bertil
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