高純度Ge-Ga-S系ガラスの作製法とNd^<3+>イオンの溶解性 [in Japanese] Preparation of Ge-Ga-S Glasses and its Solubility of Nd^<3+> Ion [in Japanese]
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The preparation process of Ge-Ga-S glasses is studied and its glass-forming region is presented. The effects of Ga and S contents on properties：glass transition temperature, density, and refractive index are investigated. The S content dependence of glass transition temperature and refractive index are divided into three regions relating to three bond types：1)the cation excess region with the contribution of Ge-Ge bonds, 2)an anion excess region with the dominant contributions of GeS2 tetrahedra connected by the S-S bonds, and 3)the other anion excess region with the contributions of S-S bonds and S8 rings. The solubilities of rare earth ion, Nd3+ in Ge-Ga-S, Ge-In-S and Ge-Sb-S glass systems are discussed using ionicity parameter, which based on the electronegativity between cation and sulfide anion.
- Journal of MMIJ
Journal of MMIJ 114(8), 581-584, 1998-08-25
The Mining and Materials Processing Institute of Japan