Email this article Effective Charges of Atoms of HTSC La2 – xSrxCuO4 Ceramics Determined from the Analysis of the Parameters of the Nuclear Quadrupole Interaction
- Authors: Marchenko A.V.1, Nasredinov F.S.2, Kiselev V.S.1, Seregin P.P.1, Shakhovich K.B.1
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Affiliations:
- Herzen State Pedagogical University of Russia
- Peter the Great St. Petersburg Polytechnic University
- Issue: Vol 44, No 5 (2018)
- Pages: 412-417
- Section: Article
- URL: https://journals.rcsi.science/1087-6596/article/view/216695
- DOI: https://doi.org/10.1134/S1087659618050115
- ID: 216695
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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.
About the authors
A. V. Marchenko
Herzen State Pedagogical University of Russia
Email: ppseregin@mail.ru
Russian Federation, St. Petersburg, 191186
F. S. Nasredinov
Peter the Great St. Petersburg Polytechnic University
Email: ppseregin@mail.ru
Russian Federation, St. Petersburg, 195251
V. S. Kiselev
Herzen State Pedagogical University of Russia
Email: ppseregin@mail.ru
Russian Federation, St. Petersburg, 191186
P. P. Seregin
Herzen State Pedagogical University of Russia
Author for correspondence.
Email: ppseregin@mail.ru
Russian Federation, St. Petersburg, 191186
K. B. Shakhovich
Herzen State Pedagogical University of Russia
Email: ppseregin@mail.ru
Russian Federation, St. Petersburg, 191186
