A new carbon phase constructed by long-range ordered carbon clusters from compressing C70 solvates

Wen Cui; Mingguang Yao; Shijie Liu; Fengxian Ma; Quanjun Li; Ran Liu; Bo Liu; Bo Zou; Tian Cui; Bingbing Liu

doi:10.1002/adma.201402519

A new carbon phase constructed by long-range ordered carbon clusters from compressing C70 solvates

Adv Mater. 2014 Nov 12;26(42):7257-63. doi: 10.1002/adma.201402519. Epub 2014 Sep 16.

Authors

Wen Cui¹, Mingguang Yao, Shijie Liu, Fengxian Ma, Quanjun Li, Ran Liu, Bo Liu, Bo Zou, Tian Cui, Bingbing Liu

Affiliation

¹ State Key Laboratory of Superhard Materials, Jilin University, Changchun, 130012, China; College of Physics and Materials Science, Tianjin Normal University, Tianjin, 300387, China.

PMID: 25227982
DOI: 10.1002/adma.201402519

Abstract

An ordered amorphous carbon cluster (OACC) structure with building blocks of highly deformed/collapsed C70 is synthesized by compressing C70 *m-xylene, which exhibits an exceptionally high hardness. Different from compressing C60 *m-xylene, a new structure transition is observed in C70*m-xylene at above 30 GPa, indicating the formation of a new OACC structure under pressure.

Keywords: C70*m-xylene; amorphous carbon clusters; high hardness; high pressure; phase transitions.