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Fig. 2. (Color online) SEM images of the Y2O3:Pr3+ powders at different annealing temperatures of (a) 600, (b) 800, (c) 1000, and (d) 1200 ℃; (e) ED spectrum of the Y2O3:Pr3+ powders at the annealing temperature of 1200 ℃ and milling time of 300 min.
New Phys.: Sae Mulli 2021;71:568~573 https://doi.org/10.3938/NPSM.71.568
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