New carbon structures obtained from C-70 at high pressures and high temperatures

resumo

The structures of two newly discovered C-70 high-pressure polymerized phases are described in a common basis. Both structures involve anti-parallel displacements of basal compact layers occurring, for each structure, along a particular unit cell axis. These displacements are crucial in the establishment of intermolecular covalent bonds and, thus, in the formation of the new phases. Pressure-temperature conditions for the synthesis of both phases are also described. (C) 2016 Elsevier Ltd. All rights reserved.

palavras-chave

POLYMERIZATION; FULLERITE; POLYMERS; DIAMOND; C-60

autores

Marques, L; Skorokhod, Y; Soares, R

nossos autores

agradecimentos

M. and Y. S. acknowledge "Fundacao para a Ciencia e Tecnologia" (FCT) and EU/FEDER COMPETE (contracts PEST-C/CTM/LA0011/2013 and FCOMP-01-0124-FEDER-037271).

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