Abstract

Powder materials of a series of early transition metal (groups 4–6B) carbides and nitrides, including TiC, VC, NbC, Mo2C, WC, TiN, VN and Mo2N, have been characterized by nearedge X-ray absorption fine structure (NEXAFS). A comparison of the carbon and nitrogen K-edge features reveals systematic trends in the electronic properties of these materials. These results are compared to an earlier NEXAFS characterization of thin VC films produced on a single crystal V(110) surface. In addition, the NEXAFS data are also compared to existing band-structure calculations for carbides and nitrides of early transition metals.

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