Elastic properties of GexAsySe100−x−y glasses

The elastic properties of GexAsySe100−x−y (0⩽x⩽30;10⩽y⩽40) glasses have been studied. The results were analyzed in terms of the dependence on the theoretical mean coordination number (mean number of covalent bonds per atom) 〈m〉(〈m〉=2+(2x+y)×0.01). Three ranges of 〈m〉(2.1⩽〈m〉⩽2.51,2.51<〈m〉⩽2.78,2.78<〈m〉⩽3) were revealed, where different dependencies of elastic moduli (Young’s modulus, shear modulus) and Poisson’s ratio of glasses on 〈m〉 were observed.