Physical, structural, optical and thermoluminescence behavior of Dy2O3 doped sodium magnesium borosilicate glasses

The rare earth doped borosilicate glass materials of composition (60 - x) B2O3 - 20 SiO2 - 10 Na2O - 10 MgO - x Dy2O3 have been prepared by melt quenching method. X-ray diffraction confirms the amorphous nature of the present glasses. FTIR spectra reveal the structure of the present glasses. The density, molar volume, average molecular weight, ion concentration, polaron radius and field strength have been determined. The optical parameters like optical band gap, refractive index, dielectric constant, optical dielectric constant, molar polarizability, reflection loss, molar refractivity, metallization and Urbach energy were also calculated. The glow curve behavior of all the present glass samples irradiated with 50 Gy, 100 Gy, 500 Gy, 1 kGy, 5 kGy and 10 kGy gamma ray doses has been investigated in temperature range 50-400 degrees C. The TL dose response shows that the sample having 0.6 mol% doping of Dy(3+ )as best suitable for dosimetric applications.