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Synthesis and Thermoluminescence of Scandium-Titanium Based Oxide Mixture

Published online by Cambridge University Press:  13 February 2015

Iliana C. Muñoz ,
Epifanio Cruz-Zaragoza ,
Francisco Brown ,
María A. Landavazo-Santos  and
Victor E. Alvarez-Montaño
Iliana C. Muñoz
Affiliation:
Departamento de Ciencias Químico-Biológicas, Universidad de Sonora, Rosales y Blvd. Luis Encinas J., Sonora, 83000, México.
Epifanio Cruz-Zaragoza
Affiliation:
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, A.P. 70-543, México D. F. 04510, México.
Francisco Brown
Affiliation:
Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, Rosales y Blvd. Luis Encinas J., Sonora, 83000, México.
María A. Landavazo-Santos
Affiliation:
Departamento de Ciencias Químico-Biológicas, Universidad de Sonora, Rosales y Blvd. Luis Encinas J., Sonora, 83000, México.
Victor E. Alvarez-Montaño
Affiliation:
Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, Rosales y Blvd. Luis Encinas J., Sonora, 83000, México.
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Abstract

Recently, the research team synthesized some scandium- and titanium-based oxide compounds, in order to analyze their thermoluminescent (TL) response [1-2]. The oxides mixture Sc2TiO5:Eu2Ti2O7:Sc2O3 was synthesized in equilibrium phase by solid state reaction at 1100 °C / 48 h. The structural characterization was performed by XRD and SEM. The TL properties of this oxide mixture were examined after exposing it to gamma radiation from a 60Co source. The glow curve showed two main glow peaks at 151 °C and 260 °C, yet the curve shape looks quite complex, revealing that it is composed by overlapped individual TL peaks, which was confirmed with the Tstop preheat method performed [3]. The linear dose-response between 150 to 600 Gy was obtained, followed by a slow saturation stage. The intensity of the glow curves increases as the radiation dose increases, and their maxima remain at the same temperature values, which indicates that the TL phenomenon follows first-order kinetics [4]. After ten irradiation-TL readout cycles at 500 Gy, good stability (SD 2.02 %) between TL integrated response and the exposure dose was found. It is concluded that Sc2TiO5:Eu2Ti2O7:Sc2O3 is a promising material to use as high-dose dosimeter.

Keywords

chemical synthesisScTi
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1769: Symposium 6E – Materials for Nuclear Applications , 2015 , IMRC 2014 6E-09
Copyright
Copyright © Materials Research Society 2015 

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References

REFERENCES

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