Abstract
The results of measurements of microhardness and density on families of glasses of the GeSbSe system are reported. Microhardnes shows a monotonic increase with Ge content for all the families of glasses studied. The stoichiometric composition in each family exhibits a minimum in density and a maximum in molar volume as compared with the Se-rich (Ge-rich) glasses of the corresponding family. A calculation based on the volume additivity of the individual elements and compounds satisfactorily explains the observed dependence of density on composition. The density results further indicate that the molar volume occupied by each of the glasses with composition (GeSe 2) 1− C (Sb 2Se 3) C is nearly constant and is equal to 18.05 ± 0.06 cc/mol.
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