Electrical properties of (Na2O)35.7(RE2O3)7.2(GeO2)57.1 (RE = Sm, Gd, Dy, Y, Ho, Er and Yb) glasses

Yan Lin Aung, Kazunari Itani, Taro Asahi, Hajime Kiyono, Masatomi Sakamoto, Susumu Nakayama

研究成果: Article査読

4 被引用数 (Scopus)

抄録

Seven kinds of sodium rare earth germanate glasses, (Na2O)35.7(RE2O3)7.2(GeO2)57.1 (RE = Sm, Gd, Dy, Y, Ho, Er, and Yb), were prepared, and their properties as a Na+ ionic conductor were compared with those of the previously reported silicate glass analogues, (Na2O)35.7(RE2O3)7.2(SiO2)57.1. Density was increased with increasing the atomic weight of rare earth element. Crystallization temperature for the (Na2O)35.7(Sm2O3)7.2(GeO2)57.1 glass was about 600 °C, which was about 150 °C lower than that of the corresponding (Na2O)35.7(Sm2O3)7.2(SiO2)57.1 glass. Conductivities of the Ge system glasses were little affected by the change in ionic radius of the rare earth. The conductivities of the (Na2O)35.7(Y2O3)7.2(GeO2)57.1 and (Na2O)35.7(Y2O3)7.2(SiO2)57.1 glasses were almost the same, though the covalent bond character between Na+ and oxide ions was found to be weakened in the Ge system from their 23Na NMR spectra.

本文言語English
ページ(範囲)30-33
ページ数4
ジャーナルMaterials Chemistry and Physics
109
1
DOI
出版ステータスPublished - 2008 5 15
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学

フィンガープリント

「Electrical properties of (Na<sub>2</sub>O)<sub>35.7</sub>(RE<sub>2</sub>O<sub>3</sub>)<sub>7.2</sub>(GeO<sub>2</sub>)<sub>57.1</sub> (RE = Sm, Gd, Dy, Y, Ho, Er and Yb) glasses」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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