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Structural studies of some V2O5-P2O5-B2O3-Fe2O3 glass systems

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Abstract

X-ray diffraction and infrared measurements were performed on vanadium borophosphate glass containing different amounts of iron ranging from 0–7.5 mol % and heat treated at 300 °C for various times. The structure and phase separation could be determined for each glass composition. V2O5 was the main precipitated phase in all heat-treated samples, and its amount was dependent on the heat-treatment time and Fe2O3 content. Also FeP was detected in samples heat treated for 24 h. The infrared measurements showed the presence of both V4+ and V5+. The symmetry of V2O 4−7 and VO 3−4 groups was found to increase with increasing Fe2O3 content. It was also found that some PO4 changed to BO3, forming a non-bridging oxygen.

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Authors and Affiliations

  1. Physics Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt

    I. Kashif, H. Farouk, A. M. Sanad & S. A. Aly

  2. Physics Department, Faculty of Education, Kafr El-Sheikh, Tanta University, Egypt

    A. M. Assem

Authors
  1. I. Kashif
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  2. H. Farouk
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  3. A. M. Sanad
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  4. S. A. Aly
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  5. A. M. Assem
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Kashif, I., Farouk, H., Sanad, A.M. et al. Structural studies of some V2O5-P2O5-B2O3-Fe2O3 glass systems. J Mater Sci 27, 122–126 (1992). https://doi.org/10.1007/BF00553846

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  • DOI: https://doi.org/10.1007/BF00553846

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