Abstract
Eu3+-doped glass-ceramics (GC) containing NaCaPO4 crystals were successfully fabricated via traditional melt-quenching route with further heat-treatment. The structure of NaCaPO4 crystals was confirmed by X-ray diffraction technique. Moreover, photoluminescence (PL) and optically stimulated luminescence in continuous wave modality (CW-OSL) properties were investigated for potential applications in radiation measurements. The PL excitation and emission spectra exhibited transitions related to Eu3+ ions corresponding to the strongest excitation and emission wavelengths at 395 and 619 nm, respectively. The CW-OSL intensity reached a maximum when the Eu2O3 concentration was 0.25 mol%. Doping the material with abundant Eu2O3 shows concentration quenching. The NaCaPO4 GC exhibited high sensitivity to ionizing radiation, Low-Z (Zeff ≈ 10.16) and a broad linear dose response range (0.02–1000 Gy).
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