The structural, morphological and optical studies on BaAl2O4/MgAl2O4/MgO:x% Gd3+ (0 ≤ x ≤ 1.1) mixed phases synthesized by sol-gel method

A. Bele; M. R. Mhlongo; L. F. Koao; T. E. Motaung; R. E. Kroon; T. T. Hlatshwayo; S. V. Motloung

doi:10.1016/j.physb.2023.415525

The structural, morphological and optical studies on BaAl₂O₄/MgAl₂O₄/MgO:x% Gd³⁺ (0 ≤ x ≤ 1.1) mixed phases synthesized by sol-gel method

A. Bele^*, M. R. Mhlongo, L. F. Koao, T. E. Motaung, R. E. Kroon, T. T. Hlatshwayo, S. V. Motloung^*

^*Corresponding author for this work

Physics

Research output: Contribution to journal › Article › peer-review

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 ⁶P_7/2 → ⁶S_7/2 transition in Gd³⁺ whereas other emission peaks originated from other impurities such as Cr³⁺.

Original language	English
Article number	415525
Journal	Physica B: Condensed Matter
Volume	673
DOIs	https://doi.org/10.1016/j.physb.2023.415525
Publication status	Published - 15 Jan 2024

Keywords

Gd
Intrinsic defects
Mixed phases
Photoluminescence

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10.1016/j.physb.2023.415525

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title = "The structural, morphological and optical studies on BaAl2O4/MgAl2O4/MgO:x% Gd3+ (0 ≤ x ≤ 1.1) mixed phases synthesized by sol-gel method",

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 6P7/2 → 6S7/2 transition in Gd3+ whereas other emission peaks originated from other impurities such as Cr3+.",

keywords = "Gd, Intrinsic defects, Mixed phases, Photoluminescence",

author = "A. Bele and Mhlongo, {M. R.} and Koao, {L. F.} and Motaung, {T. E.} and Kroon, {R. E.} and Hlatshwayo, {T. T.} and Motloung, {S. V.}",

note = "Publisher Copyright: {\textcopyright} 2023 The Authors",

year = "2024",

month = jan,

day = "15",

doi = "10.1016/j.physb.2023.415525",

language = "English",

volume = "673",

journal = "Physica B: Condensed Matter",

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T1 - The structural, morphological and optical studies on BaAl2O4/MgAl2O4/MgO:x% Gd3+ (0 ≤ x ≤ 1.1) mixed phases synthesized by sol-gel method

AU - Bele, A.

AU - Mhlongo, M. R.

AU - Koao, L. F.

AU - Motaung, T. E.

AU - Kroon, R. E.

AU - Hlatshwayo, T. T.

AU - Motloung, S. V.

PY - 2024/1/15

Y1 - 2024/1/15

N2 - 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 6P7/2 → 6S7/2 transition in Gd3+ whereas other emission peaks originated from other impurities such as Cr3+.

AB - 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 6P7/2 → 6S7/2 transition in Gd3+ whereas other emission peaks originated from other impurities such as Cr3+.

KW - Gd

KW - Intrinsic defects

KW - Mixed phases

KW - Photoluminescence

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U2 - 10.1016/j.physb.2023.415525

DO - 10.1016/j.physb.2023.415525

M3 - Article

AN - SCOPUS:85177889744

SN - 0921-4526

VL - 673

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

M1 - 415525

ER -

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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Keywords

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