Raman spectral characterization of existing phases in the Y2O3-Nb2O5 system

Masatomo Yashima, Jin Ho Lee, Masato Kakihana, Masahiro Yoshimura

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40 Citations (Scopus)


Existing phases in the Y2O3-Nb2O5 system were investigated by Raman spectroscopy as well as X-ray powder diffraction. The present study reveals that Raman spectroscopy can also identify the existing phases of C-type Y2O3 (C) phase, fluorite structured solid solution (F), monoclinic YNbO4 compound (M), and their two-phase mixtures as well as X-ray diffraction. Raman spectra of defect-fluorite yttrium niobium oxide solid solutions Y100-xNbxO150+x(20≤x≤25) exhibit broad bands in contrast to the ordered C and M phases. This is probably the first characterization of the Raman spectrum of the fiuorite-structured Y100-xNbxO150+x.

Original languageEnglish
Pages (from-to)1593-1597
Number of pages5
JournalJournal of Physics and Chemistry of Solids
Issue number10
Publication statusPublished - 1997 Oct
Externally publishedYes


  • A. fluorite-type phase
  • C. Raman spectroscopy
  • D. phase transitions
  • Niobium oxides
  • X-ray diffraction
  • YO-NbO system
  • Yttria

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics


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