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

doi:10.1143/JJAP.44.7177

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

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	7177-7181
Number of pages	5
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	44
Issue number	9 B
DOIs	https://doi.org/10.1143/JJAP.44.7177
Publication status	Published - Sep 22 2005
Externally published	Yes

Keywords

Crystallization
Gallogermanate glass
Glass structure
Langasite-type phase
Raman spectroscopy

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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Crystallization and Raman spectra of langasite-type phases in glasses of la₃Ga₅GeO₁₄-Ba₃Ga₂Ge ₄O₁₄ system. / Takahashi, Yoshihiro; Kitamura, Kenji; Indue, Satoru; Benino, Yasuhiko; Fujiwara, Takumi; Komatsu, Takayuki.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 44, No. 9 B, 22.09.2005, p. 7177-7181.

Research output: Contribution to journal › Article › peer-review

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abstract = "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.",

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AU - Takahashi, Yoshihiro

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AU - Indue, Satoru

AU - Benino, Yasuhiko

AU - Fujiwara, Takumi

AU - Komatsu, Takayuki

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AB - 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.

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