Thermally stimulated luminescence of Mg-doped ZnO Nanophosphors |
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Authors: | C. Cruz-Vázquez H.A. Borbón-Nuñez J.A. Gaspar-Armenta V.M. Castaño |
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Affiliation: | 1. Departamento de Investigación en Polímeros y Materiales de la Universidad de Sonora, Hermosillo, Sonora, México;2. Departamento de Investigación en Física de la Universidad de Sonora, Hermosillo, Sonora 83190, México;3. Centro de Física Aplicada y Tecnología Avanzada, Instituto de Física de la Universidad Nacional Autónoma de México, Querétaro, Querétaro, México |
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Abstract: | Nanosized ZnO:Mg phosphors were synthesized through a controlled chemical reaction. X-ray diffraction patterns confirmed that Mg entered in a substitutive way in Zn sites. To investigate their thermoluminescence (TL) properties, some samples were exposed to beta-particle irradiation. The results reported here show that Mg doping improves ZnO TL features that are important for TL dosimetry applications, such as the shape of the glow curve, the temperature at which the maximum TL intensity is observed, and the TL fading and reproducibility. No saturation clues of the TL response as a function of the dose is observed for doses below 1600 Gy. |
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Keywords: | zinc oxide thermoluminescence dosimetry magnesium doped |
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