A new family of sp3-hybridized carbon phases

Ning Xu, Jian Fu Li, Bolong Huang, Bao Lin Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

11 Citations (Scopus)


A new family of superhard carbon allotropes C48(2i + 1) is constructed by alternating even 4 and 8 membered rings. These new carbon allotropes are of a spatially antisymmetrical structure, compared with the symmetrical structures of bct-C4, Z-carbon, and P-carbon. Our calculations show that bulk moduli of C48(2i + 1) are larger than that of c-BN and smaller than that of cubic-diamond. C48(2i + 1) are transparent superhard materials possessing large Vicker hardness comparable to diamond. This work can help us understand the structural phase transformations of cold-compression graphite and carbon nanotubes.
Original languageEnglish
Article number016103
JournalChinese Physics B
Issue number1
Publication statusPublished - 8 Dec 2015
Externally publishedYes


  • low-temperature phase transformation
  • superhard carbon phase

ASJC Scopus subject areas

  • General Physics and Astronomy


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