Supplementary file1

FIG. S1. (a) X-ray diffraction peak shift corresponding to (311) diffraction plane and (b) Williamson Hall-plots for Mg1-xErxAl2O4 (x = 0.005, 0.01 and 0.03) nanocrystals. FIG. S2. Gaussian fitting of up-conversion emission spectrum for the E1 sample at 976 nm excitation wavelength. FIG. S3. Thermoluminescence glow curves of Mg1-xErxAl2O4 (x = 0.005, 0.01 and 0.03) nanocrystals with γ-irradiation at 1 kGy radiation dose.