Poster
A neutron diffraction study of a sodium nickel phosphate glass

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Abstract

The structure of a sodium nickel phosphate glass has been studied by neutron scattering with isotopic substitution for nickel. The first shell in the first-difference radial distribution function occurs at 2.05 Å, a value corresponding to sixfold NiO coordination. The results also indicate that the shell is distorted with two main distances. From the second-difference signals the NiNi correlations have been obtained; a first peak is centered at 3.3 Å and a stronger peak occurs at 6 Å with a shoulder at 4.8 Å.

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Cited by (3)

  • Structure and properties of alkali and silver sulfophosphate glasses

    2015, Journal of Non-Crystalline Solids
    Citation Excerpt :

    For Na2SO4, K2SO4 and ZnSO4 glasses and melts MD simulations gave coordination numbers of CN(Na) = 8, CN(K) = 12, and CN(Zn) = 6, in agreement with earlier XRD studies [50]. In phosphate glasses, a coordination number of 5–6 is given for Na+ [36,38], though some authors rather claim a coordination number of 3 [32], and others give a coordination of four in the 1st shell and of 2 more in the 2nd shell [37]. Similarly, for K+ ions coordination numbers of 6–7 are given, again, roughly half the oxygen atoms are positioned closer to K+ than the other half [39,51].

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