Carbon miscibility in the boron layers of the MgB2 superconductor

I. Maurin, S. Margadonna*, K. Prassides, T. Takenobu, Y. Iwasa, A. N. Fitch

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


A detailed structural analysis of the MgB2-xCx series at low doping levels (0 ≤ x ≤ 0.1) is presented. High-resolution synchrotron x-ray powder diffraction experiments show an extremely small miscibility of carbon within the boron sheets despite the structural analogy between MgB2 and graphite. Multiphase behavior is detected for x ≥ 0.04. The coexisting phases, isostructural with the parent MgB2 compound, differ mainly in their in-plane lattice constants, as evidenced by the splitting of the (hk0) Bragg reflections. All phases contain carbon in substitution for boron but in different concentrations.

Original languageEnglish
Pages (from-to)3894-3897
Number of pages4
JournalChemistry of Materials
Issue number9
Publication statusPublished - 2002 Sept
Externally publishedYes

ASJC Scopus subject areas

  • Materials Chemistry
  • Materials Science(all)


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