アルカリホウ珪酸塩ガラスにおける局所構造の温度変化

山田 明寛; 内藤 拓也; 吉田 智; 松岡 純; 山中 恵介; 藤岡 大毅

doi:10.14824/jakoka.2014.0_67

2014 Annual Meeting of Japan Association of Mineralogical Sciences

Session ID : R2-05

DOI https://doi.org/10.14824/jakoka.2014.0_67

Conference information

Host: Japan Association of Mineralogical Sciences

R2: Crystal structure, crystal chemistry, physical properties of minerals, crystal growth and applied mineralogy (IYCr2014)

Effect of temperature on the local-structure change in alkaline borosilicate glass

*Akihiro Yamada, Takuya Naito, Satoshi Yoshida, Jun Matsuoka, Keisuke Yamanaka, Daiki Fujioka

Author information

Keywords: XAFS, glass structure, boric coordnation

CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

Sodium borosilicate glasses (Na₂O-B₂O₃-SiO₂) undergone several heat treatment were examined by mean of XANES spectroscopy (B-K edge) using synchrotron ultra-soft X-ray. The p* peak located at ~194 eV, which reflects tetraborate unit shifted discontinuously to higher energy side at around 500°C, suggesting that the proportion of the tetraborate unit increases above the temperature.

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