New Perspective on Thermally Stimulated Luminescence and Crystallization of Barium Borate Oxyfluoride Glasses

The demand for modern materials, especially glasses, used in different applications, such as radiation sensors and spectral converters, requires a detailed study of their properties. The incorporation of fluoride compounds in borate glasses and their crystallization at the nanometric scale allows th...

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Bibliographic Details
Published in:Crystals (Basel) 2021-07, Vol.11 (7), p.745
Main Authors: Rodríguez Chialanza, Mauricio, Azcune, Germán, Bentos Pereira, Heinkel, Faccio, Ricardo
Format: Article
Language:English
Subjects:
Barium fluorides
Barium oxides
borates
Converters
Crystallization
Dosimetry
Fluorides
Fluorine
Luminescence
Nanocrystals
oxyfluoride
Oxyfluorides
Radiation detectors
Spectrum analysis
Thermal analysis
Viscosity
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Summary:The demand for modern materials, especially glasses, used in different applications, such as radiation sensors and spectral converters, requires a detailed study of their properties. The incorporation of fluoride compounds in borate glasses and their crystallization at the nanometric scale allows the properties of these materials to be further enhanced. Although many works showed improvements in some of these properties, some critical aspects, such as the crystallization mechanism and the role of the fluorine phase, need more investigation. We worked with xNaF (100 − x)BaO·2B2O3 glasses with x = 0, 5, 10, 15, 20, 25, 30, and 35% (in mol) to increase the knowledge in this field. The structural modifications and the thermally stimulated luminescence of the glasses were studied, and their crystallization was analyzed by thermal analysis and X-ray diffraction. A continuous trap distribution was found, which was responsible for its very good luminescent signal, especially in glasses with 20% NaF. By selecting a suitable amount of NaF, it is possible to obtain nanocrystals of BaF2. These promising results we reached show the applicability of these materials.
ISSN:2073-4352
2073-4352
DOI:10.3390/cryst11070745