Investigation of Nd3+-doped oxide and oxy-fluorotellurite glasses for optical and radiation shielding applications

Abstract

This paper compares the impact of incorporating barium in oxide and fluoride form in tellurite host matrix on the glass properties for varied applications. It is found that BaO doped glass exhibits higher density and energy bandgap values compared to that with BaF2. The presence of non-bridging sites that are related to fluorine and oxygen results in the dominance of the 748 cm−1 peak in the Raman spectra. The spectroscopic quality factor for both samples was calculated to be above one, with the calculated and experimental radiative lifetime being larger for sample with BaF2. The fluorescence peak positions were shifted due to the changes in the glass network. Radiation shielding values, calculated using Phy-X/PSD software, indicated that the BaF2 based glass host has better attenuation coefficients, half value layer, and mean free path compared to the BaO doped glass.

Keywords

• Barium tellurite
• Neodymium
• Luminescence
• Radiation shielding