The structural, morphological and optical studies on BaAl2O4/MgAl2O4/MgO:x% Gd3+ (0 ≤ x ≤ 1.1) mixed phases synthesized by sol-gel method
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Elsevier B.V.
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Abstract
In this study, BaAl2O4/MgAl2O4/MgO:x% Gd3+ (BMM:x% Gd3+) (0 ≤ x ≤ 1.1) mixed phases nanophosphors
were prepared for the first-time using sol-gel method. The effect of Gd3+ concentration on the morphology,
structure, and optical characteristics were examined. X-ray diffraction (XRD) confirmed the presence of hexagonal (BaAl2O4), cubic (MgAl2O4 and MgO) phases. Varying the Gd3+ concentration has no significant influence
on the prepared nanophosphors morphology. Energy dispersive X-ray spectroscopy (EDS) confirmed the presence
of the anticipated elementary compositions. Photoluminescence (PL) results showed three emissions peaks
located around 312, 616 and 730 nm. The emission peak at 312 nm was ascribed to 6
P7/2 → 6
S7/2 transition in
Gd3+ whereas other emission peaks originated from other impurities such as Cr3+.
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North-West University (Mafikeng Campus),
Mmabatho, South Africa
Citation
Bele, A., Mhlongo, M.R., Koao, L.F., Motaung, T.E., Kroon, R.E., Hlatshwayo, T.T. and Motloung, S.V., 2024. The structural, morphological and optical studies on BaAl2O4/MgAl2O4/MgO: x% Gd3+ (0≤ x≤ 1.1) mixed phases synthesized by sol-gel method. Physica B: Condensed Matter, 673, p.415525.