Abstract
Eu2+ and Mn2+ co-doped BaMgAl10O17 phosphor has been prepared by a solution combustion method. The structural, morphological and compositional analysis of the BaMgAl10O17:Eu2+ and Mn2+ powders have been studied by x-ray diffraction, scanning electron microscopy and energy dispersive x-ray spectroscopy. The electron paramagnetic resonance (EPR) spectrum exhibited resonance signals with the effective g values of g ≈ 4.88 and g ≈ 1.98. The resonance signal with the effective g value of g ≈ 4.88 is characteristic of Eu2+ ions whereas g ≈ 1.98 is due to Mn2+ ions. The number of spins participating in resonance, Gibbs free energy, magnetic susceptibility, Curie constant, effective magnetic moment, zero-field splitting parameter and hyperfine splitting constant have been evaluated. From optical and EPR correlation, it is inferred that Eu2+ and Mn2+ are present in the BaMgAl10O17 matrix.
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This paper was supported by the KU Research Professor Program of Konkuk University.
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Singh, V., Sivaramaiah, G., Rao, J.L. et al. Eu2+ and Mn2+ Co-doped BaMgAl10O17 Blue- and Green-Emitting Phosphor: A Luminescence and EPR Study. J. Electron. Mater. 45, 2776–2783 (2016). https://doi.org/10.1007/s11664-016-4370-3
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DOI: https://doi.org/10.1007/s11664-016-4370-3