Abstract
In order to clarify the difference between the local structures of Fe3+ and those of Fe2+ ions in a semiconductive phosphate (10V2O5-30Fe2O3-60P2O5) glass, the temperature dependencies of the isomer shift (IS), quadrupole splitting (QS) and absorption area (AR) for Fe3+ and Fe2+ ions were measured. Debye temperatures (Θ D) for Fe3+ and Fe2+ ions were determined to be 318 ± 29 K and 223 ± 18 K, respectively, from the temperature dependence of the absorption area (AR). From the temperature dependence of the quadrupole splitting(QS), B strength parameters for Fe3+ and Fe2+ ions, which are the coefficients for theT 3/2 term, were deduced. It was found that in this phosphate glass, Debye temperaturesΘ D(AR) were consistent with those obtained using the relation of the B parameter to Debye temperature described in the literature. Also from the temperature dependence of the isomer shift, the difference between the thermal effects except the second-order Doppler shift for Fe3+ ions and those for Fe2+ ions was compared.
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Oohata, T., Shirahata, K., Toriyama, T. et al. Mössbauer spectroscopy of a semiconductive phosphate glass (10V2O5 30Fe2O3 60P2O5 at low temperature. Hyperfine Interact 94, 2131–2136 (1994). https://doi.org/10.1007/BF02063751
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DOI: https://doi.org/10.1007/BF02063751