Preparation of gallium oxynitride in the presence of iron through a citrate route

Shinichi Yamamoto, Shinichi Kikkawa, Yuji Masubuchi, Takashi Takeda, Maki Okube, Akira Yoshiasa, Marck Lumey, Richard Dronskowski

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Gallium oxynitrides were prepared in the copresence of various amounts of Fe3+ by ammonia nitridation of oxide precursors. Their crystallinity reduced in a compositional range up to 3 mol% and improved again above 4 mol% with an appearance of a nitride impurity. The product with 2 mol% of Fe3+ showed the maximum oxygen content of 21 mol% and minimum nitrogen content of 24 mol%. X-ray absorption spectroscopy, Mössbauer and magnetic measurements suggested a small amount of Fe3O4-like clusters in the oxynitride products. Density-functional calculations supported that the Fe-O-clustered system is more preferable than the statistical distribution of iron in the hexagonal gallium oxynitride structure.

Original languageEnglish
Pages (from-to)1656-1659
Number of pages4
JournalMaterials Research Bulletin
Issue number8
Publication statusPublished - 2009 Aug 5


  • A. Inorganic compounds
  • A. Nitrides
  • B. Chemical synthesis
  • D. Crystal structure
  • D. Electronic structure

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


Dive into the research topics of 'Preparation of gallium oxynitride in the presence of iron through a citrate route'. Together they form a unique fingerprint.

Cite this