| Abstract: | The effect of metallic vacancies on the density of states in niobium nitride is examined. Calculations were carried out using
the recursion and coherent-potential methods for NbN and Nb0.75N. The recursion density of states in nonstoichiometric niobium nitride is obtained for parallel and antiparallel arrangement
of the metallic vacancies. It is found that the formation of such vacancies leads to the formation of an electronic spectrum
of additional (in comparison with the complete compound) states in the high-energy part of the hybrid metal-nonmetal region.
The changes in the density of states of Nb0.75N in relation to the degree of ordering in the metallic sublattice are also examined.
Institute of Materials Science, National Academy of Sciences of Ukraine, Kiev. Translated from Poroshkovaya Metallurgiya,
Nos. 7–8, pp. 86–89, July–August, 1997. |
