Cerium and manganese doped alumina matrices: Preparation, characterization and kinetic analysis of their glow curves

Rojas, Jorge; Cogollo, Rafael; Gil, Míriam; Usma, Jorge Iván; Gutierrez, O.; Soto, Adriana María

doi:10.1016/j.jlumin.2019.116572

Cited by 4 publications

(2 citation statements)

References 38 publications

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“…The glow curves were analyzed by using deconvolution with LAF and Rasheedy's methodology. The kinetic parameters: kinetic order parameter (b), activation energy (E), the pre-exponential factor (S") and the initial concentration of trapped electrons (n 0 ); were found as described in [15].…”

Section: Methodsmentioning

confidence: 99%

Analysis of the thermoluminescent glow curve of alumina matrices obtained under different sintering and cerium doped conditions

Rojas

Cogollo

Gutierrez

2022

J. Phys.: Conf. Ser.

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This work presents the deconvolution of thermoluminescent (TL) glow curves, by using logistic asymmetric functions, of sintered pure alumina matrices under two different conditions: 1000 °C/3h (NALO) and 1000 °C/6h (ALO), and also, of cerium-doped matrix with 0.1 wt.% sintered at 1000 °C/3h (NALOCe0.1). Sintering treatments induced a remarkable change in the TL kinetics and consequently in the glow curve shape, in terms of the number of traps and initially trapped charge carriers. Structural analysis revealed α-alumina phase in NALO and ALO matrices, and its distortion for NALOCe0.1, achieving a generation of new electronic traps energetically more stable for doped matrix. This result offers a possible solution in order to reduce the notable fading for TL characteristic peak in alumina matrix, expanding its field of applications.

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Section: Methodsmentioning

confidence: 99%

Analysis of the thermoluminescent glow curve of alumina matrices obtained under different sintering and cerium doped conditions

Rojas

Cogollo

Gutierrez

2022

J. Phys.: Conf. Ser.

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“…Kinetic trap parameters such as activation energy E, frequency factor s and the kinetic order b can be determined using analysis of the individual peaks of the TL glow curve [37][38][39]. TL kinetics data can help researchers to obtain information about the trapping mechanism and defect level sites of the studied material.…”

Section: • Kinetic Parametersmentioning

confidence: 99%

Synthesis, thermoluminescence characterizations, and photon attenuation parameters of MgAl₂O₄ structure doped with different ions

Qaid,

Asemi,

Ahmed

et al. 2024

Luminescence

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In this work, different ion co‐doped Mg1‐xAl2O4 nanophosphors, coded as M5Cr‐5LaA, M5Cr‐5CuA, M0.07Si‐0.03CeA, and M0.05Ti‐0.05LaA, where 5Cr‐5La, 5Cr‐5Cu, 0.07Si‐0.03Ce, and 0.05Ti‐0.05La representing the added ions (mol%), were prepared using the sol–gel method. Phase structure, transmission electron microscope (TEM) images, and element feasibility were checked using X‐ray diffraction, TEM analysis, and energy dispersive X‐ray (EDX) spectroscopy. Their thermoluminescence (TL) response was checked using a 5 Gy γ‐test dose. The M0.05Ti‐0.05LaA sample was found to be best for the TL response with an ~1.1 times response compared with that of the MTS‐700 commercial detector. A wide range of dose–responses for the M0.05Ti‐0.05LaA sample was found up to a 20 Gy γ‐dose with the lowest detectable dose of ⁓23 μGy. Photon attenuation parameter results were Zeff ⁓10, which mean that the M0.05Ti‐0.05LaA sample could be considered as a near tissue equivalent material. Due to this study, the M0.05Ti‐0.05LaA sample can be considered as a promising detector for application in personal and medical dosimetric monitoring.

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Effect of manganese doping of corundum on the content and diffusion of water and other gases

Крейсберг¹

2022

Materials Chemistry and Physics

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Cerium and manganese doped alumina matrices: Preparation, characterization and kinetic analysis of their glow curves

Cited by 4 publications

References 38 publications

Analysis of the thermoluminescent glow curve of alumina matrices obtained under different sintering and cerium doped conditions

Analysis of the thermoluminescent glow curve of alumina matrices obtained under different sintering and cerium doped conditions

Synthesis, thermoluminescence characterizations, and photon attenuation parameters of MgAl₂O₄ structure doped with different ions

Effect of manganese doping of corundum on the content and diffusion of water and other gases

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Cerium and manganese doped alumina matrices: Preparation, characterization and kinetic analysis of their glow curves

Cited by 4 publications

References 38 publications

Analysis of the thermoluminescent glow curve of alumina matrices obtained under different sintering and cerium doped conditions

Analysis of the thermoluminescent glow curve of alumina matrices obtained under different sintering and cerium doped conditions

Synthesis, thermoluminescence characterizations, and photon attenuation parameters of MgAl2O4 structure doped with different ions

Effect of manganese doping of corundum on the content and diffusion of water and other gases

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Synthesis, thermoluminescence characterizations, and photon attenuation parameters of MgAl₂O₄ structure doped with different ions