The composition effect on FTIR spectra, D. C. electrical conductivity,
density and molar volume have been carried out for five glasses (G1 to G5) of
(13 M2O or M'O) – 78 B2O3 – x Al2O3 – y Nacl system, where M is Li, Na or K
and M' is Ba; x = 9 and y = 0 for G1, while for G2, G3, G4 and G5: x = 3 and
y = 6 mol %. FTIR spectra have been recorded in wavenumber range from
4000 cm-1 to 400 cm-1. Eight absorption bands were observed in the rgion from
400 – 1750 cm-1. The electrical conductivity yield activation energies for the
investigated glasses. These activation energies as well as the density and the
molar volume have been found to be in the fallowing order Li+ < Na+ < K. The
molar volume, density and the activation energy for barium oxide seem to be
constant whether Na Cl is present or not.