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High-temperature conductivity study on single-crystal C60

  • Single-Crystal Fullerenes
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Abstract

We report about dc, ac (100Hz≦v≦100kHz) and contactless microwave (10 GHz) conductivity studies on C60 crystalline bulk material from room temperature to 850 K. The high temperature regime is governed by an activated behavior with a frequency and sample independent activation energy of about 0.9 eV. The low temperature regime exhibits a frequency dependent and weakly temperature dependent conductivity due to extrinsic properties.

Anomalies in the heating curves of virgin samples (dynamical vacuum conditions) in the temperature ranges 560 K and 740 K are ascribed to the desorption of oxygen.

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Kremer, R.K., Rabenau, T., Maser, W.K. et al. High-temperature conductivity study on single-crystal C60 . Appl. Phys. A 56, 211–214 (1993). https://doi.org/10.1007/BF00539476

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