Investigation of structure and properties of hightemperature superconductors LаFeAsO(1 – х)Fх by means of the Mössbauer effect

Authors

  • Vladimir A. Lomonosov Belarusian State University, Niezaliežnasci Avenue, 4, 220030, Minsk, Belarus
  • Alexander L. Kholmetskii Belarusian State University, Niezaliežnasci Avenue, 4, 220030, Minsk, Belarus
  • Leonid V. Makhnach Belarusian State University, Niezaliežnasci Avenue, 4, 220030, Minsk, Belarus
  • Aleksey V. Alduchenkov National Research Center «Kurchatov Institute», 1 Academician Kurchatov Square, Moscow 123098, Russia
  • Oleg V. Gerashchenko National Research Center «Kurchatov Institute», 1 Academician Kurchatov Square, Moscow 123098, Russia
  • Igor S. Okunev National Research Center «Kurchatov Institute», 1 Academician Kurchatov Square, Moscow 123098, Russia
  • Miroslav Mashlan Palacky University, 511/8 Križkovského, Olomouc 77141, Czech Republic
  • Tolga Yarman Tepeören Mahallesi, Okan Üniversitesi Tuzla Kampüsü, Akfirat – Tuzla 34959, Tuzla, Istanbul, Turkey

Keywords:

iron-containing superconductors, Mössbauer spectroscopy, high-temperature Kondo effect, magnetic and electrophysical property

Abstract

The results of investigation of iron-containing superconductors LаFeAsO(1 – х)Fх (х = 0,11…0,15) are presented, based on joint analysis of Mössbauer spectroscopy, XRD, magnetic and electrophysical methods. A full suppression of magnetic order in these samples with the appearance of the Kondo effect is shown at x = 0.15 and T < 40 K, as well as the transformation of Kondo effect into high-temperature superconductivity at х = 0.11…0.14 and T < 25 K. The revealed effects allow assuming a significant contribution of interaction between magnetic moments of conducting electrons and impurities in the Cooper pair formation for iron-containing superconductors.

Author Biographies

  • Vladimir A. Lomonosov, Belarusian State University, Niezaliežnasci Avenue, 4, 220030, Minsk, Belarus

    PhD (chemistry); head of the research laboratory of physical chemistry of condensed systems, faculty of chemistry

  • Alexander L. Kholmetskii, Belarusian State University, Niezaliežnasci Avenue, 4, 220030, Minsk, Belarus

    doctor of science (engineering), docent; head of the research laboratory of scientific instrument making, faculty of physics

  • Leonid V. Makhnach, Belarusian State University, Niezaliežnasci Avenue, 4, 220030, Minsk, Belarus

    PhD (chemistry); senior researcher at the research laboratory of physical chemistry of condensed systems, faculty of chemistry

  • Aleksey V. Alduchenkov, National Research Center «Kurchatov Institute», 1 Academician Kurchatov Square, Moscow 123098, Russia

    PhD (physics and mathematics); senior researcher at the Petersburg Nuclear Physics Institute named by B. P. Konstantinov

  • Oleg V. Gerashchenko, National Research Center «Kurchatov Institute», 1 Academician Kurchatov Square, Moscow 123098, Russia

    PhD (physics and mathematics); leading researcher at the Petersburg Nuclear Physics Institute named by B. P. Konstantinov

  • Igor S. Okunev, National Research Center «Kurchatov Institute», 1 Academician Kurchatov Square, Moscow 123098, Russia

    PhD (physics and mathematics); senior researcher at the Petersburg Nuclear Physics Institute named by B. P. Konstantinov

  • Miroslav Mashlan, Palacky University, 511/8 Križkovského, Olomouc 77141, Czech Republic

    full professor; vice-rector for scientific research

  • Tolga Yarman, Tepeören Mahallesi, Okan Üniversitesi Tuzla Kampüsü, Akfirat – Tuzla 34959, Tuzla, Istanbul, Turkey

    full professor

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Published

2018-04-30

Issue

No. 1 (2018): Journal of the Belarusian State University. Chemistry

Section

Original Articles

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How to Cite

[1]
Lomonosov, V.A. et al. 2018. Investigation of structure and properties of hightemperature superconductors LаFeAsO(1 – х)Fх by means of the Mössbauer effect. Journal of the Belarusian State University. Chemistry. 1 (Apr. 2018), 43–53.