網目修飾酸化物含有テルル酸塩系ガラスの構成とラマンスペクトル

概要

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The 720 and 78n cm^<-1> components of the deconvoluted Raman spectra of glasses in the systems Rn-teO_2 (R=Li, Na,K,Ba,Zn) were attributed to TeO_3 groups and the 665cm^<-1> band was to TeO_4 groups. The theoretical values of the molar ratio TeO_3/TeO_4 derived from an assumed vitrification reaction were compared with the ratio derived from the intensity ratios of the Raman bands, I(720)/I(665) and I(780)/I(665). It was indicated that [O_<2/2>Te=O] and [O_<1/2>Te(=O)-O]^- units were induced by the addition of network modifying oxides in the composition range of lower atomic ratio O/Te. It was proposed that the decrease in the rate of increase of the ratio TeO_3/TeO_4 in the range of larger O_Te was due to the equilibrium TeO_<4/2>←→[O_<2/2>Te=O] favoring the former unit.
社団法人日本材料学会の論文
1993-05-15