Abstract
xLi2O·(20-x)Ag2O·20Fe2O3·60P2O5 glasses (x = 0, 5, 10, 15 and 20 mol%) and 5Ag2O·15Li2O·5V2O5·15Fe2O3·60P2O5 glass were prepared by melt-quenching of the reagent mixture at 1000 °C. Glass transition temperature (T g) and crystallization temperature (T c) of these samples were determined by differential thermal analysis (DTA). It proved that T g increased with Li2O content. XRD of as-quenched glasses confirmed their amorphous nature. XRD of samples heat treated for one hour at temperature near their T c, indicated nanocrystals precipitated in the glassy matrix with an average particle size of 35 nm. Mössbauer results revealed that the relative fraction of Fe2 + was decreased with an increasing Li2O content. The isomer shift values of Fe3 + lie in a range of 0.38–0.45 mm s − 1, while those for Fe2 + were 1.10–1.31 mm s − 1. Heat-treated sample of 5Ag2O·15Li2O·5V2O5·15Fe2O3·60P2O5 glass exhibit an enhancement of the electrical conductivity by three orders of magnitude due to the 3d-electron (polaron) hopping from V4 + to V5 + in the “vanadate glass” units.
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References
Duclot, M., Souquet, J.L.J.: Power Sources 97–98, 610 (2001)
Garbarczyk, J.E., Wasiucionek, M., Jozwiak, P., Nowinski, J.L., Julien, C.M.: Solid State Ion. 180, 531 (2009)
El-Desoky, M.M., Zayed, H.S.S., Ibrahim, F.A., Ragab, H.S.: Phys. B 404, 4125 (2009)
Nishida, T., Yoshida Y., Takahashi, Y., Okada, S., Yamaki, J.: J. Radioanal. Nucl. Chem. 275, 417 (2008)
Fukuda, K., Ikeda, A., Nishida, T.: Solid State Phenom. 90, 215 (2003)
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Hassaan, M.Y., El-Desoky, M.M., Masuda, H. et al. Effect of nanocrystallization on the electrical conduction of silver lithium phosphate glasses containing iron and vanadium. Hyperfine Interact 205, 91–95 (2012). https://doi.org/10.1007/s10751-011-0478-2
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DOI: https://doi.org/10.1007/s10751-011-0478-2