Abstract
Glass is a wonderful material that has found wide spread applications in different fields such as smart windows, a glass system doped with a rare earth oxide composed of 15 %SiO2+ (50-x)% TeO2 +1%Sm2O3 +34 % Mn3O4 + xTiO2, X = 0, 0.1, 0.2, 0.3, 0.4 mol% was prepared by melt quenching technique at 1423 K and examined by X-ray diffraction, FTIR,UV–vis spectroscopy and AC measurements. The dielectric constant, dielectric loss and the AC electrical conductivity was measured at frequencies 1 kHz, 10 kHz, and 100 kHz at temperature range from 303 to 523 K. The dielectric constant exhibit constant value up to 400 K then increase gradually up to 500 K while decreases with frequency increasing. The AC conductivities for samples with Ti concentrations (0 and 0.1) showed a constant value of conductivity at low temperature range followed by an increase in conductivity with increasing temperature. The samples with concentrations (0.2, 0.3 and 0.4) show after a certain limit of temperature decreasing in conductivity. This glass system showed sensitivity for most solar spectrum which is promising for smart windows applications in the new buildings
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