Ultrarapid microwave synthesis of superconducting refractory carbides

Simon R. Vallance, Dave M. Round, Clemens Ritter, Edmund J. Cussen, Sam Kingman, Duncan H. Gregory

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


Nb1−xTaxC Carbides can be synthesized by high power MW methods in less than 30 s. In situ and ex situ techniques probing changes in temperature and dielectric properties with time demonstrate that the reactions self-terminate as the loss tangent of the materials decreases. The resulting carbides are carbon deficient and superconducting; Tc correlates linearly to unit cell volume, reaching a maximum at NbC.
Original languageEnglish
Pages (from-to)4502-4504
Number of pages3
JournalAdvanced Materials
Issue number44
Early online date1 Jul 2009
Publication statusPublished - 26 Nov 2009


  • carbides
  • microwaves
  • neutron diffraction
  • superconductivity
  • transition metals


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