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

  • 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

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

References

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Published
2018-04-30
Keywords: iron-containing superconductors, Mössbauer spectroscopy, high-temperature Kondo effect, magnetic and electrophysical property
How to Cite
Lomonosov, V. A., Kholmetskii, A. L., Makhnach, L. V., Alduchenkov, A. V., Gerashchenko, O. V., Okunev, I. S., Mashlan, M., & Yarman, T. (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, 43-53. Retrieved from https://journals.bsu.by/index.php/chemistry/article/view/1220
Issue
No 1 (2018): Journal of the Belarusian State University. Chemistry
Section
Original Articles

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