首页|Crystallization and Raman Spectra of Langasite-Type Na_2CaGe_6O_(14), Na_2SrGe_6O_(14) and Pb_3Ga_2Ge_4O_(14) in Corresponding Glasses

Crystallization and Raman Spectra of Langasite-Type Na_2CaGe_6O_(14), Na_2SrGe_6O_(14) and Pb_3Ga_2Ge_4O_(14) in Corresponding Glasses

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  • Trans Tech Publications Ltd
We investigated the crystallization behavior of langasite-type phases in the stoichiometric corresponding glasses, i.e., Na_2CaGe_6O_(14), Na_2SrGe_6O_(14) and Pb_3Ga_2Ge_4O_(14). 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.

glasscrystallizationlangasite-type phaseraman spectroscopysecond-harmonic generation

Yoshihiro Takahashi、Takumi Fujiwara、Yasuhiko Benino、Takayuki Komatsu

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Department of Applied Physics, Tohoku University, 6-6-05 Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan

Graduate School of Environmental Science, Okayama University, 3-3-1 Tsushimanaka, Okayama 700-8530, Japan

Department of Materials Science and Technology, Nagaoka University of Thechnology, 1603-1 Kamitomioka-cho, Nagaoka, Niigata 940-2188, Japan

2010

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

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.421/422
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