Synthesis and crystal structure of a new niobium oxynitride, Nb2N0.88O0.12

Kohta Yamada, Hidetoshi Masuda, Nobuaki Sato, Takeo Fujino

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A new niobium oxynitride Nb2N0.88O0.12 has been synthesized by reducing Nb2O5 in a stream of H2 gas containing 0.07% N2 at 1080°C for 5 weeks. The compound crystallizes in a hexagonal system with space group P3̄1m, and Z = 3. The lattice parameters are a = 5.2916 ± 0.0001 Å and c = 4.9987 ± 0.0001 Å. In this space group, the nitrogen/oxygen atoms statistically occupy the 1a and 2d positions, and niobium atoms occupy the 6k position. This structure is the same as that of β-Nb2N (ε-Fe2N type), and the compound is regarded as a solid solution of β-Nb2N and hypothetical Nb2O of the same crystal structure. The crystallographic parameters were refined by using the Rietveld method. The chemical bonding of this compound seems to have a significant covalent and/or metallic character in the ionic bonding. (C) 2000 Academic Press.

Original languageEnglish
Pages (from-to)36-42
Number of pages7
JournalJournal of Solid State Chemistry
Volume150
Issue number1
DOIs
Publication statusPublished - 2000 Jan 1

Keywords

  • Crystal structure
  • H reduction
  • Niobium oxynitride
  • Rietveld refinement

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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