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Glass Physics and Chemistry

, Volume 41, Issue 2, pp 237–243 | Cite as

Determination of atom charge states in lattices of superconducting metal oxides of copper by 61Cu(61Ni) and 67Cu(67Zn) emission Mössbauer spectroscopy

  • G. A. Bordovsky
  • A. V. Marchenko
  • A. V. Nikolaeva
  • P. P. Seregin
  • K. U. Bobokhuzhaev
Article

Abstract

It is shown that for the majority of metal oxides of divalent copper a linear correlation exists between the quadrupolar couplings on 63Cu nuclei (C Cu) (NMR data for the 63Cu isotope), on one side, and 67Zn (C Zn) and 61Ni nuclei (C Ni) (emission Mössbauer spectroscopy data on the 67Cu (67Zn) and 61Cu (61Ni) isotopes), on the other side. This finding indicates the similarity of copper electronic structures in these lattices. Analogous linear relationships exist between C Cu, C Ni, and the calculated values of the principal component of the crystalline electric field gradient for the compounds of divalent copper. The mentioned dependences allow estimating the validity of the models for the charge distribution on the lattice sites proposed for superconducting ceramics.

Keywords

emission Mössbauer spectroscopy NMR electric field gradient tensor 

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Copyright information

© Pleiades Publishing, Ltd. 2015

Authors and Affiliations

  • G. A. Bordovsky
    • 1
  • A. V. Marchenko
    • 1
  • A. V. Nikolaeva
    • 1
  • P. P. Seregin
    • 1
  • K. U. Bobokhuzhaev
    • 2
  1. 1.Herzen State Pedagogical University of RussiaSt. PetersburgRussia
  2. 2.National University of UzbekistanTashkentUzbekistan

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