Structural-chemical features of crystallizing glasses of the Se-Sn and As2Se3-Sn systems

The nearest environment of tin atoms and the regions of the existence of the Sn(IV) and Sn(II) states in hardened glasses of the As2Se3-Sn system have been determined based on the study of Mössbauer spectra on 119Sn nuclei and long-wavelength IR spectra, thermodynamic calculations, analysis, and the generalization of the data from measuring microhardness, density, electric conductivity parameters and other data. The probable structural-chemical models of SeSn x (x < 0.01) and AsSe1.5Sn x (x < 0.3) glasses inclined to crystallization have been proposed.