Crystallization and Raman spectra of langasite-type phases in glasses of la3Ga5GeO14-Ba3Ga2Ge 4O14 system

Yoshihiro Takahashi, Kenji Kitamura, Satoru Indue, Yasuhiko Benino, Takumi Fujiwara, Takayuki Komatsu

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6 Citations (Scopus)


Crystallization of the langasite-type La3Ga5GeO 14-Ba3Ga2Ge4O14 mixed crystals in the stoichiometric corresponding glasses was studied by differential thermal and X-ray diffraction analyses, and by Raman spectroscopy. Although the glasses used in this study were multicomponent systems (BaO-La 2O3-Ga2O3-GeO2), the langasite-type phases were singly crystallized in the corresponding glasses. The Raman spectroscopic study revealed the structural similarity on the scale of short-range order between the langasite-type phase and the corresponding glasses. This also strongly suggested the coexistence of Ga and Ge with six-coordination in the gallogermanate glasses.

Original languageEnglish
Pages (from-to)7177-7181
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number9 B
Publication statusPublished - Sep 22 2005
Externally publishedYes


  • Crystallization
  • Gallogermanate glass
  • Glass structure
  • Langasite-type phase
  • Raman spectroscopy

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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