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MgAl 2 O 4 :Eu 3+ red-light emitting powder phosphor was prepared at temperature as low as 500 °C within a few minutes by using the combustion route. The prepared powder was characterized by X-ray diffraction, scanning electron microscopy and Fourier-transform infrared spectrometry. The luminescence of Eu 3+ -activated MgAl 2 O 4 shows a strong red emission dominant peak around 611 nm, which can be attributed to the 5 D 0 - 7 F 2 transition of Eu 3+ ions from the synthesized phosphor particles under excitation (394 nm). Electron paramagnetic resonance (EPR) measurements at the X-band showed that no signal could be attributed to Eu 2+ ions in MgAl 2 O 4 .

Investigation of a New Red-Emitting, Eu3+-Activated MgAl2O4Phosphor

Investigation of a New Red-Emitting, Eu³⁺-Activated MgAl₂O₄Phosphor