Abstract
Nanoparticles of pure yttrium oxide (Y2O3) have been prepared by sol gel method. The powder X-ray diffraction (PXRD) pattern of as synthesized sample showed the amorphous nature. The as synthesized Y2O3 powders are annealed at 500, 600, 700, 800 and 900°C for 2h. Y2O3 powder heat treated for 600°C showed cubic phase and the crystallite sizes are found to be ∼13nm. Fourier transformed infrared spectroscopy (FTIR) revealed absorption with peaks at 3434, 1724, 1525, 1400, 847, 562 and 465cm−1. Photoluminescence (PL) of 100MeV Si8+ ion irradiated samples shows emission with peaks at 417, 432, 465nm. It is found that PL intensity increases with increasing in ion fluence up to ∼3×1012ionscm−2 and then decreases with further increase in ion fluence. A well resolved thermoluminescence (TL) glow with peak at ∼430K (Tm1) and an unresolved TL glow with peak at ∼538 (Tm2), 584K (Tm3) are observed in ion irradiated samples.
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