Tb-doped MgAl2O4 phosphors: A study of structural and luminescence characteristics

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dc.contributor.authorHalefoglu, YZ
dc.contributor.authorSouadi, G
dc.contributor.authorAyvacikli, M
dc.contributor.authorBulcar, K
dc.contributor.authorTopaksu, M
dc.contributor.authorCanimoglu, A
dc.contributor.authorMadkhali, O
dc.contributor.authorKarmouch, R
dc.contributor.authorCan, N
dc.date.accessioned2024-07-18T12:05:48Z
dc.date.available2024-07-18T12:05:48Z
dc.description.abstractIn the MgO-Al2O3 system, magnesium aluminate spinel (MgAl2O4) is a technologically significant compound due to its unique properties, including a high melting point, low thermal conductivity, excellent thermal shock resistance, chemical inertness, and robust mechanical strength. This compound has diverse applications in re-fractory materials, catalyst supports, moisture sensors, nuclear techniques, insulating materials, and even mili-tary applications. While rare-earth elements are commonly used as dopants in luminescent materials, limited research exists on doping of Tb3+ ions in magnesium aluminate. This study investigates the luminescence properties of Tb3+ doped synthesis magnesium aluminate materials, shedding light on this underexplored area. The combustion method is employed for synthesis, known for producing nano-sized powders with exceptional luminescent properties. Additionally, this study explores Sm3+ ion doping in magnesium aluminate materials and their luminescence properties. Using the combustion synthesis method, structural attributes of Tb3+-doped MgAl2O4 nanophosphors are meticulously examined. Through X-ray diffraction (XRD) and Fourier-transform infrared (FTIR) analyses, coupled with excitation and emission spectra, a comprehensive investigation of the luminescent provide behavior at room temperature is provided. The XRD data reveal Tb3+ doped MgAl2O4 phosphors exhibit a single phase with face centred cubic structure belonging to the Fd3 m space group, consistent with the standard JCPDS files (No. 21-1152). Excitation and emission spectra offer valuable insights into the energy transitions within the Tb3+-doped MgAl2O4 phosphors. Furthermore, the study explores the effects of varying Tb3+ ion concentrations on the luminescent properties, revealing an optimal doping concentration of 5 wt% Tb for maximizing emission intensity. Concentration quenching, primarily attributed to dipole-dipole (d-q) interactions, is observed at higher Sm3+ concentrations. In conclusion, this research enhances our understanding of rare-earth ion doping in luminescent materials and highlights the potential applications of Tb3+-doped MgAl2O4 nanophosphors, which offer promise for various technological applications, including lighting and displays.
dc.identifier.issn0969-8043
dc.identifier.other1872-9800
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/9983
dc.language.isoEnglish
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.subjectEMISSION
dc.subjectGLASSES
dc.titleTb-doped MgAl2O4 phosphors: A study of structural and luminescence characteristics
dc.typeArticle

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