X-ray K-absorption studies in glassy Se80Te10 and Se80Te18M10 (M=Ag, Cd, In and Sb)
X-ray K-absorption studies have been made in glassy Se80Te10 and Se80Te18M10 (M=Ag, Cd, In and Sb) to understand the bonding of metallic atoms in ternary alloys. The authors find that the Se-K-edge shifts towards the negative energy side in all the ternary alloys compared with binary Se80Te10 alloy. Moreover, the edge shift is found to increase as the difference in electronegativity between metallic atoms and Se increases. These results are in agreement with Pauling's concept of electronegativity and indicate that the nature of bonds is iono-covalent in character in these glasses, as found in many crystalline solids.