Glass Physics and Chemistry

, Volume 44, Issue 2, pp 78–84 | Cite as

Electronic Spectra and Structure of Molten Mixtures xNa2O–Re2O3–(100–x)B2O3 (Re = Pr, Nd)

  • A. A. Khokhryakov
  • A. O. Vershinin
  • A. S. Paivin
  • S. A. Istomin
Article

Abstract

The results of the spectral studies of molten mixtures xNa2O–Re2O3–(100–x)B2O3 (Re = Pr, Nd; x = 0–50) at 1273 K are reported. In both the mixtures, the cyclical changes in the coordination numbers of boron atoms, for which the limits of the concentration variation of fourfold coordinated boron groups are specified, are observed with an increase in the concentration of Na2O. It is shown that the coordination numbers of the Pr(III) and Nd(III) ions increase from 6 to 8 in the range from 0 to 10 mol % of Na2O.

Keywords

rare-earth elements electronic spectra conversion borate melt boron oxide absorption spectra reflection spectra 

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • A. A. Khokhryakov
    • 1
    • 2
  • A. O. Vershinin
    • 2
  • A. S. Paivin
    • 2
  • S. A. Istomin
    • 2
  1. 1.Yeltsin Ural Federal UniversityYekaterinburgRussia
  2. 2.Institute of Metallurgy, Ural BranchRussian Academy of SciencesYekaterinburgRussia

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