Physical Science International Journal

This review paper related to the effect of indium (In) on the bond distribution, cohesive energy (CE), average heat of atomization (H_s) and average electro negativity χ_ave of chemically modified chalcogenide glasses belonging to the study of physical parameters of Se_98-xCd₂In_x (0≤x≤10) chalcogenide glasses and Se₇₅Te_15-xCd₁₀In_x (0≤x≤15) systems. The bonding betweens Se_98-xCd₂In_x (0≤x≤10) (SCI system) and Se₇₅Te_15-xCd₁₀In_x (0≤x≤15) (STCI system) glassy alloys were evaluated with the chemical bond approach (CBA), where the involvement of heteropolar and homopolar bonds was calculated based on coordination and stoichiometric constraints of glassy alloys. The cohesive energy (CE) and average heat of atomization (H_s) were calculated by adding the biased bond dissociation energies of the constituent bonds. The results tell that increasing indium content appreciably modifies the bond distribution by increasing the arrangement of heteropolar bonds such as In–Se and In–Te in place of Se–Se and Te–Te homopolar bonds. Increasing In compositions show improved network connectivity due to increased cross-linking, which influences the overall stability of the glass network. The cohesive energy for SCI and STCI network systems are increases with increasing indium concentrations. The heat of atomization is almost constant for SCI but increases for STCI with indium concentration. This can be explaining by formation chemical bond between elements.