Properties and Microstructure of GeS2-Ga2S3-CdS Glasses

The samples of the GeS2-Ga2 S3-CdS pseudo-ternary glassy sysem were prepared by comventional melt-quenching techniques.The microstructure of the GeS2-Ca2 S3-CdS glasses was analyzed thoroughly using Raman spectra and the relationships among the composition,microstructure and properties（such as thermal properties,densities,optical properties）were probed.The experimental results indicate that the GeS2 acts as the network former,the Ga2S3 as the net intermediate,and the CdS as the net modifier,The GeS2 and Ga2S3 exist in the form of GeS4/2],GaS4/2]tetrahedra or S3G3（Ga）-（Ga）GeS3 ethane-like units within the glassy network,and the addition of CdS mainly breaks the Ge（Ga）-（Ga）Ge bonds among the ethane -like units,leading to the formation of GeS4/2].GaS4/2]tetrahedra.The Tg and Tx have tight relations on the congregated degree of glassy network,however,λvis,n and d are hardly involved into the connectional dependence of the space arrangement.

Properties and microstructure of GeS2−Ga2S3−CdS glasses

The samples of the GeS₂−Ga₂S₃−CdS pseudo-ternary glassy system were prepared by conventional melt-quenching techniques. The microstructure of the GeS₂−Ga₂S₃−CdS glasses was analyzed thoroughly using Raman spectra and the relationships among the composition, microstructure and properties (such as thermal properties, densities, optical properties) were probed. The experimental results indicate that the GeS₂ acts as the network former, the Ga₂S₃ as the net intermediate, and the CdS as the net modifier. The GeS₂ and Ga₂S₃ exist in the form of GeS_4/2], GaS_4/2] tetrahedra or S₃ Ge(Ga)−(Ga)GeS₃ ethane-like units within the glassy network, and the addition of CdS mainly breaks the Ge(Ga)−(Ga) Ge bonds among the ethane-like units, leading to the formation of GeS_4/2], GaS_4/2] tetrahedra. The T_g and T_x have tight relations on the congregated degree of glassy network, however, λ _ris , n and d are hardly involved into the connectional dependence of the space arrangement. Funded by the National Natural Science Foundation of China (No. 50125205) and the Opening Fund of Key Laboratory of Silicate Materials Science and Engineering (Wuhan University of Technology) Ministry of Education (No. SYSJJ2004-14)