Anisotropic Carbon Phases Prepared from Fullerite C70 under High Pressure

We present the structural and ultrasonic study of carbon phases prepared by quenching after heating of fullerite C 70 in the temperature range 300-1100°C at pressures 4 and 7.5 GPa. The main aspect of the work concerns the structural and elastic anisotropy of samples resulted as consequence of quasi...

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Bibliographic Details
Published in:Fullerenes, nanotubes, and carbon nanostructures nanotubes, and carbon nanostructures, 2006-12, Vol.14 (2-3), p.409-414
Main Authors: Mukhamadiarov, V. V., Vanin, D. A., Lyapin, A. G., Brazhkin, V. V., Kondrin, M. V., Lyapin, S. G., Popova, S. V.
Format: Article
Language:English
Subjects:
carbon
directional anisotropy
Fullerite C
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Summary:We present the structural and ultrasonic study of carbon phases prepared by quenching after heating of fullerite C 70 in the temperature range 300-1100°C at pressures 4 and 7.5 GPa. The main aspect of the work concerns the structural and elastic anisotropy of samples resulted as consequence of quasi hydrostatic pressure with an additional pressure component along the axis of pressure load. Structural anisotropy correlates with anisotropy of the tensor of effective elastic constants taken for the medium with single axis of anisotropy. Comparison of the data obtained with anisotropy effects, earlier observed in the phases synthesized from C 60 in the similar quasi hydrostatic conditions, clarifies the role of non-spherical symmetry of C 70 molecule.
ISSN:1536-383X
1536-4046
DOI:10.1080/10407780600666015