Significance of multicomponent modifiers incited Dy3+ ions doped boro-phosphate glasses for radiation shielding applications

Abstract

Dy3+ doped boro-phosphate glasses [BPXNfDy1.0] were synthesized with the chemical composition 44B2O3+25P2O5+15NaF+15MO+1Dy2O3 (where M=Li2CO3, Mg2CO3, Sr2CO3, ZnO and Ba2CO3) by conventional melt-quenching method. The physical properties (density, refractive index), structural (boron-boron separation, phosphorous-phosphorous separation), FTIR (functional groups) and absorption properties (direct and indirect bandgap) were explored in examining the ability of the proposed multicomponent glasses for radiation protection applications. The XRD pattern declared the non-periodicity/amorphous nature of the sample. The Ba-containing glass is observed to possess a tightly packed nature among the present glass samples, which is confirmed from the evaluation of the structural parameters such as dB−B, dP−P. The molar volume (Vm), and oxygen packing density (OPD) of the Ba-incorporated glass possess reversal behavior. Similarly, Mg-included glass exhibits an inverse trend for Poisson’s ratio and fractal bond connectivity parameters. Furthermore, the evaluation of optical features like bandgap energy was achieved from the absorption analysis. The formation of bridging oxygens is observed to be in accordance with oxygen packing density values.