摘要:
Silicate glasses of the composition (Li2O)x(SiO2)100−x (x= 0, 20, 33.3, and 40) have been prepared and characterized by X‐ray and neutron diffraction experiments using the technique of isotopic substitution. Thus, at each composition, a set of independent diffraction patterns allows the discussion of the short‐range and medium‐range structure. For the short‐range structure, average coordination numbers and atomic‐pair distances are obtained from the pairdistribution functions. For the medium‐range structure, i.e., for atomic‐pair distances >0.5 nm, an increase of the amplitudes of the oscillations in the pair‐distribution function is observed with increases in the Li2O content.