Structural Rigidity, Percolation and Transition-Temperature Study of the Ge19Se81-xSbx System
Selenium-based glasses are attractive candidate materials because of their low transmission losses and other optical properties. In the present paper, samples of Ge19Se81-xSbx (x = 0, 4, 8, 12, 16, 17.2, 20) were prepared by using the melt-quench technique, and their X-ray diffraction spectra were studied. Some of the physical parameters were calculated theoretically. It was observed that the glass transition temperature increased up to x = 17.2 and then decreased whereas the theoretically calculated band-gap decreased with increasing Sb content.
N. Sharma et al., "Structural Rigidity, Percolation and Transition-Temperature Study of the Ge19Se81-xSbx System", Defect and Diffusion Forum, Vols. 316-317, pp. 37-44, 2011