Cr2O3 effect on the structure, optical, and radiation shielding properties of Na2B4O7-SiO2-CaO-Cr2O3 glasses

65Na(2)B(4)O(7)-25SiO(2)-(10 - x) CaO-x Cr2O3 x = (0 <= x <= 5 mol.%) glass system was synthesized and optical, structural, and radiation shielding characteristics are examined. The glass density increased as Cr2O3 was added, while the molar volume decreased. FT-IR bands are correlated with the vibrations of BO3 and BO4. Cr3+ appears to convert BO3 into BO4, according to preliminary FT-IR results. E-opt values are in the range of 2.57-3.31 eV. Increases in the E opt can be linked to density and N-4 variation. (Zeq) increased then decreased as the incident photon energy increased with the replacement of CaO by Cr2O3. Sigma R enhances as the Cr2O3 content of the glasses increases. G 5 is a better absorber of fast neutron when the FNRC of glass samples is compared. For neutron attenuation applications, the glass sample G 5 is the best option.