Abstract

Li 2S–GeS 2–Ga 2S 3 glasses and thin films were prepared and their conductivities were compared. Bulk glasses were melted in Si-coated silica tubes. The glass-forming region was observed at cation ratios of 0 or 40–70% Li and less than 50% Ga. Thin films with a wider composition range were formed by RF sputtering. Conductivities were almost identical in bulk glasses and films of similar composition and increased along with increasing Li 2S content. Conductivity and glass transition temperature ( T g) increased slightly with addition of a moderate amount of Ga 2S 3. These results are due to the mixed-former effect.

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