Structural, thermal and optical properties of CaBO and CaLiBO glasses doped with Eu3

Thermal, structural and optical properties of undoped and Eu3+ doped CaBO and CaLiBO glasses were carried out by the Raman, FT-IR, UV–Vis absorption, fluorescence, thermoluminescence and DSC analyses. The addition of Li+ to the CaBO glass changes its characteristic temperatures by decreasing the gla...

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Bibliographic Details
Published in:Journal of non-crystalline solids 2014-09, Vol.398-399, p.57-61
Main Authors: Rojas, S.S., De Souza, J.E., Yukimitu, K., Hernandes, A.C.
Format: Article
Language:English
Subjects:
Borate glasses
CaLiBO glass
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Differential scanning calorimetry
Equations of state, phase equilibria, and phase transitions
Exact sciences and technology
FT-IR
Gaussian
Glass
Glass transition
Glass transitions
Glasses
Isomerization
Melting
Optical constants: refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity
Optical properties
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of bulk materials and thin films
Other luminescence and radiative recombination
Photoluminescence
Physics
Specific phase transitions
Spectra
Thermal properties
Thermoluminescence
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Summary:Thermal, structural and optical properties of undoped and Eu3+ doped CaBO and CaLiBO glasses were carried out by the Raman, FT-IR, UV–Vis absorption, fluorescence, thermoluminescence and DSC analyses. The addition of Li+ to the CaBO glass changes its characteristic temperatures by decreasing the glass transition, Tg, and melting temperatures to about 40°C and 50°C, respectively, due to a M–O interaction (M=modifier cation) that plays an important role in determining Tg. Moreover, a liquid–liquid phase separation observed in the binary system was avoided after Li+ addition, which allows the melting of glasses in lower temperatures (from 1450°C to 1100°C). In spite of the variations on thermal properties, small changes in the glass structure concerning boron–oxygen arrangements were seen by the Raman and FT-IR when compared to the spectra obtained from all prepared samples (variations
ISSN:0022-3093
1873-4812
DOI:10.1016/j.jnoncrysol.2014.04.026