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Glass Physics and Chemistry

, Volume 44, Issue 5, pp 412–417 | Cite as

Effective Charges of Atoms of HTSC La2 – xSrxCuO4 Ceramics Determined from the Analysis of the Parameters of the Nuclear Quadrupole Interaction

  • A. V. Marchenko
  • F. S. Nasredinov
  • V. S. Kiselev
  • P. P. Seregin
  • K. B. Shakhovich
Article
  • 9 Downloads

Abstract

Using the comparison method of the calculated (the model of point charges) and experimental (Mössbauer spectroscopy and the nuclear magnetic resonance) parameters of the nuclear quadrupole interaction, it is shown that the effective charges of all the atoms of the lattices of the superconducting La2–xSrxCuO4 ceramics correspond to the standard degrees of their oxidation, except for atoms of the planar oxygen, the lowered charge of which is interpreted as the result of localization on them of the hole appearing when La3+ ions are substituted by Sr2+ ions.

Keywords

high-temperature superconductors nuclear quadrupole interaction Mössbauer spectroscopy effective charges 

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • A. V. Marchenko
    • 1
  • F. S. Nasredinov
    • 2
  • V. S. Kiselev
    • 1
  • P. P. Seregin
    • 1
  • K. B. Shakhovich
    • 1
  1. 1.Herzen State Pedagogical University of RussiaSt. PetersburgRussia
  2. 2.Peter the Great St. Petersburg Polytechnic UniversitySt. PetersburgRussia

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