(K2O)35.7(RE2O3)7.2(SiO2)57.1 (RE=Sm, Gd, Dy, Ho, Y, Er, Yb) ガラスの電気特性

中山 享; 朝日 太郎; Aung Yan Lin; 大原 瑠奈; 坂本 政臣

doi:10.2109/jcersj.112.238

Technical reports

Electrical Properties of (K₂O)_35.7(RE₂O₃)_7.2(SiO₂)_57.1 (RE=Sm, Gd, Dy, Ho, Y, Er, Yb) Glasses

Susumu NAKAYAMA, Taro ASAHI, Yan Lin AUNG, Runa OHHARA, Masatomi SAKAMOTO

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Keywords: Glass, Potassium rare earth silicate, Alkali metal ionic conductor, Differential thermal analysis, Conductivity

JOURNAL FREE ACCESS

2004 Volume 112 Issue 1304 Pages 238-241

DOI https://doi.org/10.2109/jcersj.112.238

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Abstract

Seven kinds of potassium rare earth silicate glasses, (K₂O)_35.7(RE₂O₃)_7.2(SiO₂)_57.1 (RE=Sm, Gd, Dy, Ho, Y, Er, Yb), were prepared by melting a mixture of K₂CO₃, RE₂O₃ and SiO₂. Density increased with increasing atomic weight of RE. An exothermic peak attributable to crystallization was observed in the range between 720 and 800°C. Powder X-ray diffraction analysis showed the formation of two distinct phases, KREO₂ and K₂SiO₃, above crystallization temperature. The conductivity of (K₂O)_35.7(Y₂O₃)_7.2(SiO₂)_57.1 glass was similar to those of K₅YSi₄O₁₂ ceramics with the same composition and (K₂O)₃₆(SiO₂)₆₄ glass not containing Y₂O₃.

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