Abstract
57Fe-Mössbauer and DTA study of several oxide glasses has revealed that there exists a linear relationship between Tg(glass transition temperature) and δ (quadrupole splitting) of Fe3+, which is substituted for individual NWF(network former), e.g., V5+, Ti1+, Te1+, Al3+, Ca3+ and B(III). The linear relationship named “Tg-δ rule” is expressed by Tg=aδ+b, which indicates that Tg of oxide glasses is closely correlated to the asymmetry or local distortion of NWF-oxygen polyhedra. The “Tg-δ rule” also holds for the γ-ray irradiated tellurite glasses and for the glass-ceramics of calcium aluminate.
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Nishida, T., Shindo, H. & Takashima, Y. Discovery of a linear relationship between the glass transition temperature of oxide glasses and the quadrupole splitting of the Fe3+ substituted for the individual network—forming cations (NWF). Hyperfine Interact 69, 603–606 (1992). https://doi.org/10.1007/BF02401899
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DOI: https://doi.org/10.1007/BF02401899