Impact of bridging oxygens formation on optical properties of Fe3+ doped Li2O–Al2O3–SiO2–TiO2 glasses

  • A. Faeghinia 1
  • 1 Ceramic Department, Materials and Energy Research Center (MERC), P.O. Box 31779-83634, Karaj, Iran

Abstract

In this study, the structural chemistry of Fe3+ doped Li2O–Al2O3–SiO2–TiO2 (LAST) glasses has been analyzed utilizing UV-Vis spectroscopy. Optical parameters like absorption and extinction coefficients, indirect and direct optical band gaps, Urbach energy as well as Fermi energy level of samples were estimated via their absorption spectra. Then, it was tried to make a relationship between the variation of mentioned parameters and structural chemistry of different doped samples. Results of the investigation illustrated that even a little change in the microstructure of glassy samples has an effect on optical parameters and accordingly it could be sensible. Furthermore, it was revealed that Fe3+ ions have the role of network forming in the structure of glass by increasing the formation of bridging oxygens (BOs) in the matrix.

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Keywords: UV-Vis absorption spectra, Glass, Short-range order, Bridging oxygens formation, Optical parameters, Structural chemistry

References

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Impact of bridging oxygens formation on optical properties of Fe3+ doped Li2O–Al2O3–SiO2–TiO2 glasses
Submitted
2021-12-25
Available online
2022-03-13
How to Cite
Faeghinia, A. (2022). Impact of bridging oxygens formation on optical properties of Fe3+ doped Li2O–Al2O3–SiO2–TiO2 glasses. Synthesis and Sintering, 2(1), 14-19. https://doi.org/10.53063/synsint.2022.2179