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

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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.

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Authors and Affiliations

  1. Herzen State Pedagogical University of Russia, St. Petersburg, 191186, Russia

    A. V. Marchenko, V. S. Kiselev, P. P. Seregin & K. B. Shakhovich

  2. Peter the Great St. Petersburg Polytechnic University, St. Petersburg, 195251, Russia

    F. S. Nasredinov

Authors
  1. A. V. Marchenko
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  2. F. S. Nasredinov
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  3. V. S. Kiselev
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  4. P. P. Seregin
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  5. K. B. Shakhovich
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Corresponding author

Correspondence to P. P. Seregin.

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Original Russian Text © A.V. Marchenko, F.S. Nasredinov, V.S. Kiselev, P.P. Seregin, K.B. Shakhovich, 2018, published in Fizika i Khimiya Stekla.

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Marchenko, A.V., Nasredinov, F.S., Kiselev, V.S. et al. Effective Charges of Atoms of HTSC La2 – xSrxCuO4 Ceramics Determined from the Analysis of the Parameters of the Nuclear Quadrupole Interaction. Glass Phys Chem 44, 412–417 (2018). https://doi.org/10.1134/S1087659618050115

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  • DOI: https://doi.org/10.1134/S1087659618050115

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