Temperature dependence of second-harmonic intensity and raman shift in langasite-type phases

Yoshihiro Takahashi, Kenji Kitamura, Satoru Inoue, Rie Ihara, Yasuhiko Benino, Takumi Fujiwara, Takayuki Komatsu

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In this study, we examined the temperature dependence of the second-harmonic (SH) intensity and Raman shift in the langasite-type Ba 3Ga2Ge4O14 (BGG) and Na 2CaGe6O14 (NCG) crystalline phases. The SH intensity curves revealed an anomalous temperature behavior around 370°C and 270°C in the BGG and NCG phases, respectively. Furthermore, as a result from the Raman spectral measurement, it was suggested that the anomaly observed in the lagasite-type phases originated in the A-site.

Original languageEnglish
Pages (from-to)692-695
Number of pages4
JournalJournal of the Ceramic Society of Japan
Issue number1322
Publication statusPublished - Oct 2005



  • Langasite-type phase
  • Raman spectroscopy
  • Second-harmonic generation
  • Temperature dependence

ASJC Scopus subject areas

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

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