On Y_2O_3 Li_2O Al_2O_3 B_2O_3 glasses: synthesis, structure, physical, optical characteristics and gamma-ray shielding behavior

摘要

The doping effect of Y_2O_3 oxide on the structure, physical properties, and gamma-ray competence of new prepared glass systems of the form xY_2O_3. (20-x)Li_2O 20Al_2O_3-60B_2O_3 glasses: x = 0-3.2 mol% encoded as (0Y_2O_3-3.2Y_2O_3) was investigated. The synthesized glasses were transparent and in an amorphous state. Clusters around microns were formed in the synthesized glasses were formed. Fourier transformation infrared measurements revealed that the replacement of Li_2O by Y_2O_3 can result in the transforming of NBOs found in the BO_3 groups into BOs, in the region of 1120-1500 cm~(-1) and, therefore, the BO_(4-) units. The addition of Y_2O_3 leads to an increase in the density of glasses from 2.154 to 2.378 g/cm~3, while the molar volume was decreased from 31.627 to 31.295 cm~3/mol. Indeed, there was an insignificant increase in the bandgap values from 3.33 eV of 0Y_2O_3 glass sample to 3.54 eV of 3.2Y_2O_3 glasses. The mass attenuation coefficient results were arranged in the order that (3.2Y_2O_3)MAC ＞ (1.6Y_2O_3)MAC ＞ (0.8Y_2O_3)MAC ＞ (0.4Y_2O_3)MAC ＞ (0.2Y_2O_3)MAC-＞ (0Y_2O_3)MAC.At the lowest photon energy 0.015 MeV, half-value layer was 0.130, 0.123, 0.118, 0.108, 0.092, and 0.072 cm, while at 15 MeV, the values were found equal to 17.651, 17.404, 17.196, 16.762, 15.879, and 14.739 for 0Y_2O_3, 0.2Y_2O_3, 0.4Y_2O_3, 0.8Y_2O_3,1.6Y_2O_3, and 3.2Y_2O_3, respectively. The maximum Z_(eff) values were obtained in the low zone and ranged from 9.61 to 14.22 at 0.015 MeV, while the lowest values were obtained at 15 MeV and ranged from 7.50 to 8.57 for 0Y_2O_3 and 3.2Y_2O_3, respectively. In general, results claimed that the prepared 0Y_2O_3-3.2Y_2O_3 glasses can be applied in optical, biological, and medical applications.