Gamma rays interactions with Eu2O3 doped lead fluoroborate glasses
作者： Akshatha Wagh , Y. Raviprakash , Sudha D. Kamath
DOI: 10.1016/J.JALLCOM.2016.11.299
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摘要: Abstract The research article concentrates on the effects of gamma rays [150 kGy] over lead fluoroborate glass systems doped with Europium (Eu2O3) ions synthesized through melt-quench technique. FTIR measurements confirmed conversion three-fold borate units (BO3) to tetrahedral (BO4) before irradiation and a back was studied post irradiation, addition Eu2O3 ions; which cross verified N4 N3 coordination numbers. Effects have been ESR spectra where, resonance paramagnetic centers were perceived. Decrease in intensities red shift absorption peaks (UV-VIS-NIR spectra) indicates formation color matrices after high energetic exposure. Stability samples calculated using different characteristic temperatures (Tg, Tx, Tc, Tm) employed DSC Different elastic moduli (E, K, G, μ) standard Makishima-Mackenzie's model. Hardness (H) number also measured showed decrease H values increase Fragility (F) parameter. unusual trend observed Eg validated Molar Volume (Vm), Oxide ion polarizability (αe) optical basicity (Λ) values. could be recommended for solid state lighting devices because its semiconducting nature energy band gap (Eg: 2.34–2.83 eV). competitive stability factors (Dietzel factor (ΔT) ∼ 160–270 °C; Hruby's (Hr): 1.130–4.237), densities (ρ: 3.8501–4.1944 g/cm3), hardness parameter (H: 3.32–4.46 GPa) low poisson's ratio (μ: 0.241–0.257) supportive αe motivates proposed as radiation shielders space applications.
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