Abstract
The structure of Ag2O–TeO2 glasses is being investigated to make the interpretation of the more complex PbI2–Ag2O–TeO2 glasses easier. Using Raman vibrational, X-ray diffraction (XRD) and electron diffraction pattern (EDP) spectroscopy, the local environment of Te atoms and the crystallization behaviour of glasses were studied. The XRD spectra revealed that certain crystalline phases develop in the binary Ag2O–TeO2 glasses. The well-crystalline species are metastable Ag2Te4O9 and Ag2Te2O5. The results of transmission electron microscope and EDP agree well with those of X-ray diffraction (XRD), suggesting that crystalline-clustered species develop in glasses enriched with Ag2O. The distinguishing feature of glasses in the trenay system containing PbI2 is their amorphous nature. The Raman spectra are well-resolved, with distinct characteristics that identify various structural units of telluride. The primary building telluride structural units are [TeO4] and [TeO3+1]. But TeO3–, TeO32– and Ag–Te species, on the other hand, are formed when PbI2 concentration is increased
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Al Mohammedi, W., El Damrawi, G., Sherbiny, M. et al. Structure–properties correlation based on tellurite glasses modified by silver oxide and lead iodide. Bull Mater Sci 45, 90 (2022). https://doi.org/10.1007/s12034-022-02676-7
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DOI: https://doi.org/10.1007/s12034-022-02676-7