ランガサイト相における第二高調波強度及びラマンシフトの温度依存性

高橋 儀宏; 北村 健二; 井上 悟; 井原 梨恵; 紅野 安彦; 藤原 巧; 小松 高行

doi:10.2109/jcersj.113.692

Notes

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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Keywords: Langasite-type phase, Second-harmonic generation, Raman spectroscopy, Temperature dependence

JOURNAL FREE ACCESS

2005 Volume 113 Issue 1322 Pages 692-695

DOI https://doi.org/10.2109/jcersj.113.692

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Abstract

In this study, we examined the temperature dependence of the second-harmonic (SH) intensity and Raman shift in the langasite-type Ba₃Ga₂Ge₄O₁₄ (BGG) and Na₂CaGe₆O₁₄ (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.

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