Crystallization and raman spectra of langasite-type Na2CaGe 6O14, Na2SrGe6O14 and Pb3Ga2Ge4O14 in corresponding glasses

Yoshihiro Takahashi; Takumi Fujiwara; Yasuhiko Benino; Takayuki Komatsu

doi:10.4028/www.scientific.net/KEM.421-422.213

Crystallization and raman spectra of langasite-type Na₂CaGe ₆O₁₄, Na₂SrGe₆O₁₄ and Pb₃Ga₂Ge₄O₁₄ in corresponding glasses

Yoshihiro Takahashi, Takumi Fujiwara, Yasuhiko Benino, Takayuki Komatsu

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We investigated the crystallization behavior of langasite-type phases in the stoichiometric corresponding glasses, i.e., Na₂CaGe ₆O₁₄, Na₂SrGe₆O₁₄ and Pb₃Ga₂Ge₄O₁₄. The langasite-type phases singly were formed by heat-treatment in the glasses. Raman spectroscopy revealed the structural similarity on the scale of short-/medium-range order between the langasite-type phases and the corresponding glasses. Furthermore, we also examined the temperature dependence of second-harmonic (SH) intensity of the langasite-type phases. The SH-temperature curves exhibited an anomalous behavior, implying a structural change, e.g., isomorphous phase transition.

Original language	English
Title of host publication	Asian Ceramic Science for Electronics III and Electroceramics in Japan XII
Publisher	Trans Tech Publications Ltd
Pages	213-216
Number of pages	4
ISBN (Print)	0878493069, 9780878493067
DOIs	https://doi.org/10.4028/www.scientific.net/KEM.421-422.213
Publication status	Published - 2010
Event	6th Asian Meeting on Electroceramics, AMEC-6, in conjunction with the Electronics Division Meeting of the Ceramic Society of Japan - Tsukuba, Japan Duration: Oct 22 2008 → Oct 24 2008

Publication series

Name	Key Engineering Materials
Volume	421-422
ISSN (Print)	1013-9826
ISSN (Electronic)	1662-9795

Other

Other	6th Asian Meeting on Electroceramics, AMEC-6, in conjunction with the Electronics Division Meeting of the Ceramic Society of Japan
Country/Territory	Japan
City	Tsukuba
Period	10/22/08 → 10/24/08

Keywords

Crystallization
Glass
Langasite-type phase
Raman spectroscopy
Second-harmonic generation

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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Takahashi, Y., Fujiwara, T., Benino, Y., & Komatsu, T. (2010). Crystallization and raman spectra of langasite-type Na₂CaGe ₆O₁₄, Na₂SrGe₆O₁₄ and Pb₃Ga₂Ge₄O₁₄ in corresponding glasses. In Asian Ceramic Science for Electronics III and Electroceramics in Japan XII (pp. 213-216). (Key Engineering Materials; Vol. 421-422). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/KEM.421-422.213

Crystallization and raman spectra of langasite-type Na₂CaGe ₆O₁₄, Na₂SrGe₆O₁₄ and Pb₃Ga₂Ge₄O₁₄ in corresponding glasses. / Takahashi, Yoshihiro; Fujiwara, Takumi; Benino, Yasuhiko; Komatsu, Takayuki.

Asian Ceramic Science for Electronics III and Electroceramics in Japan XII. Trans Tech Publications Ltd, 2010. p. 213-216 (Key Engineering Materials; Vol. 421-422).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Takahashi, Y, Fujiwara, T, Benino, Y & Komatsu, T 2010, Crystallization and raman spectra of langasite-type Na₂CaGe ₆O₁₄, Na₂SrGe₆O₁₄ and Pb₃Ga₂Ge₄O₁₄ in corresponding glasses. in Asian Ceramic Science for Electronics III and Electroceramics in Japan XII. Key Engineering Materials, vol. 421-422, Trans Tech Publications Ltd, pp. 213-216, 6th Asian Meeting on Electroceramics, AMEC-6, in conjunction with the Electronics Division Meeting of the Ceramic Society of Japan, Tsukuba, Japan, 10/22/08. https://doi.org/10.4028/www.scientific.net/KEM.421-422.213

Takahashi Y, Fujiwara T, Benino Y, Komatsu T. Crystallization and raman spectra of langasite-type Na₂CaGe ₆O₁₄, Na₂SrGe₆O₁₄ and Pb₃Ga₂Ge₄O₁₄ in corresponding glasses. In Asian Ceramic Science for Electronics III and Electroceramics in Japan XII. Trans Tech Publications Ltd. 2010. p. 213-216. (Key Engineering Materials). https://doi.org/10.4028/www.scientific.net/KEM.421-422.213

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abstract = "We investigated the crystallization behavior of langasite-type phases in the stoichiometric corresponding glasses, i.e., Na2CaGe 6O14, Na2SrGe6O14 and Pb3Ga2Ge4O14. The langasite-type phases singly were formed by heat-treatment in the glasses. Raman spectroscopy revealed the structural similarity on the scale of short-/medium-range order between the langasite-type phases and the corresponding glasses. Furthermore, we also examined the temperature dependence of second-harmonic (SH) intensity of the langasite-type phases. The SH-temperature curves exhibited an anomalous behavior, implying a structural change, e.g., isomorphous phase transition.",

keywords = "Crystallization, Glass, Langasite-type phase, Raman spectroscopy, Second-harmonic generation",

author = "Yoshihiro Takahashi and Takumi Fujiwara and Yasuhiko Benino and Takayuki Komatsu",

note = "Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; 6th Asian Meeting on Electroceramics, AMEC-6, in conjunction with the Electronics Division Meeting of the Ceramic Society of Japan ; Conference date: 22-10-2008 Through 24-10-2008",

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AU - Benino, Yasuhiko

AU - Komatsu, Takayuki

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N2 - We investigated the crystallization behavior of langasite-type phases in the stoichiometric corresponding glasses, i.e., Na2CaGe 6O14, Na2SrGe6O14 and Pb3Ga2Ge4O14. The langasite-type phases singly were formed by heat-treatment in the glasses. Raman spectroscopy revealed the structural similarity on the scale of short-/medium-range order between the langasite-type phases and the corresponding glasses. Furthermore, we also examined the temperature dependence of second-harmonic (SH) intensity of the langasite-type phases. The SH-temperature curves exhibited an anomalous behavior, implying a structural change, e.g., isomorphous phase transition.

AB - We investigated the crystallization behavior of langasite-type phases in the stoichiometric corresponding glasses, i.e., Na2CaGe 6O14, Na2SrGe6O14 and Pb3Ga2Ge4O14. The langasite-type phases singly were formed by heat-treatment in the glasses. Raman spectroscopy revealed the structural similarity on the scale of short-/medium-range order between the langasite-type phases and the corresponding glasses. Furthermore, we also examined the temperature dependence of second-harmonic (SH) intensity of the langasite-type phases. The SH-temperature curves exhibited an anomalous behavior, implying a structural change, e.g., isomorphous phase transition.

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