Infrared spectroscopy on the fullerene C-70 under pressure

Thirunavukkuarasu, K. and Kuntscher, C. A. and Borondics, Ferenc and Pergerné Klupp, Gyöngyi and Kamarás, Katalin (2008) Infrared spectroscopy on the fullerene C-70 under pressure. PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 245 (10). pp. 2006-2009. ISSN 0370-1972*

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Abstract

We present pressure-dependent infrared transmittance measurements on fullerene C-70 at room temperature in the pressure range up to 4 GPa. The vibrational modes of C-70 exhibit nearly linear pressure dependence with a sluggish anomaly at around 0.8 GPa. This anomaly could be attributed to the change in the orientational ordering of the C-70 molecules. The sluggish character of the transition could be either due to the continuous change of the orientational order or the coexistence of two phase in the solid C-70. (C) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

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