Abstract
Dy3+ and Eu3+‐doped oxyfluoride glass and glass nanocomposites are subjected to low and high dose of γ‐irradiation, i.e., 100 Gy and 1 kGy, respectively. The photoluminescence spectra show changes in electric to magnetic dipole ratios signifying variations in local structural environment. Glass‐ceramics depict the tendency of crystallization or the ordering of structure with increasing γ‐irradiation dose. The results are further supported with X‐ray diffraction and scanning electron microscopy (SEM) measurements. The formation of nanometer size fluoride particles in the pristine glass and glass‐ceramics after γ‐irradiation has been observed from SEM studies. Fourier transform infrared (FTIR) study reveals the restructuring of aluminosilicate network under γ‐irradiation.
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