Structure and physicochemical properties of the (AsSI)1−x (As2S3) x and (AsSeI)1−x (As2Se3) x glasses
V. A. BordovskiĭHerzen Russian State Pedagogical University, nab. Reki Moiki 48, St. Petersburg, 191186, RussiaR. A. CastroHerzen Russian State Pedagogical University, nab. Reki Moiki 48, St. Petersburg, 191186, RussiaА. В. МарченкоHerzen Russian State Pedagogical University, nab. Reki Moiki 48, St. Petersburg, 191186, RussiaП. П. СерегинHerzen Russian State Pedagogical University, nab. Reki Moiki 48, St. Petersburg, 191186, Russia
2007en
ABI
Аннотация
The structure and physicochemical properties of glasses in the (AsSI)1−x (As2S3) x and (AsSeI)1−x (As2Se3) x systems are investigated. It is demonstrated using 127I Mössbauer spectroscopy that the structure of the glasses under study is built up of the structural units AsS3/2 (AsSe3/2), which correspond to the compounds As2S3 (As2Se3), and the ternary structural units, which correspond to the compounds AsSI (AsSeI). In turn, these structural units are connected into a three-dimensional network. The proposed model accounts for the observed linear dependences of the physicochemical properties (density, microhardness, glass transition temperature) of the glasses on the composition.
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