Blue photoluminescence of germania-stabilized benitoite

Yoshihiro Takahashi, Kenji Kitamura, Nobuo Iyi, Satoru Inoue, Takumi Fujiwara

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Benitoite (BaTiSi3O9) phases, which were partially-substituted by germania (GeO2) in order to stabilize the phase, were synthesized, and their optical properties were examined. The benitoite phase was crystallized by a small quantity of Ge-introduction into the benitoite composition. Clear blue emission with the peak at ∼430 nm, due to the transition of 3T11A1 in the TiO6 octahedra, was observed at room temperature during the ultraviolet excitation, being sufficient for a visual confirmation. On the other hand, the reduction in blue emission intensity by the Ge-introduction was confirmed. This was qualitatively explained on the basis of configurational- coordinate mode without discrepancy.

Original languageEnglish
Pages (from-to)1143-1146
Number of pages4
JournalJournal of the Ceramic Society of Japan
Issue number1358
Publication statusPublished - 2008 Oct


  • Benitoite
  • Configurational- coordinate model
  • Germanosilicate
  • Photoluminescence
  • Titanate

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry


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