Thermal transport in hard carbon prepared from fullerene

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Abstract
We report measurements of thermal conductivity in the 30 - 350 K range of hard fullerene-based carbon. The material has been prepared by pressure - temperature treatment of fullerene. It shows an unusual combination of high hardness and relatively high electrical conductivity. Its thermal conductivity is about at room temperature and decreases almost linearly in the investigated temperature range. Excellent linearity in a wide temperature range may arise from some sort of crystalline order in the transformed substance. Obtained data are compared with thermal properties of , glassy carbon and diamond. The applicability of recent theoretical models for explanation of recorded data is discussed.