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Home  >  Journal list  >  Journal of the Ceramic Society of Japan ( 2003 - 2007 )  >  Vol.113  No.1322 (October) (2005)  >  pp.692-695

Journal of the Ceramic Society of Japan ( 2003 - 2007 )
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Temperature Dependence of Second-Harmonic Intensity and Raman Shift in Langasite-Type Phases

Yoshihiro TAKAHASHI1), Kenji KITAMURA2), Satoru INOUE2), Rie IHARA3), Yasuhiko BENINO3), Takumi FUJIWARA3) and Takayuki KOMATSU3)
1) International Center for Young Scientists, National Institute for Materials Science
2) Advanced Materials Laboratory, National Institute for Materials Science
3) Department of Chemistry, Nagaoka University of Technology

  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.

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

Received: July 15, 2005
Accepted: August 19, 2005 , Published online: October 01, 2005
Copyright (c) 2005 The Ceramic Society of Japan



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