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Specific features of magnetic states of impurity iron ions in the perovskite La0.75Sr0.25Co0.98 57Fe0.02O3

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Abstract

Single-phase polycrystalline La0.75Sr0.25Co0.98 57Fe0.02O3 samples have been prepared by solidstate ceramic technology. The samples have the rhombohedral structure (space group \(R\bar 3c\)). The studies of perovskite La0.75Sr0.25Co0.98 57Fe0.02O3 by Mössbauer spectroscopy on impurity 57Fe nuclei in the temperature range of 5–293 K have revealed the existence of a superparamagnetic relaxation in the temperature range of 100–210 K. The parameters of hyperfine interactions (hyperfine magnetic fields, line shifts, and quadrupole shifts) and the anisotropy energy have been measured, and the frequencies of magnetic moment relaxation of iron ions have been estimated.

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Authors and Affiliations

  1. Moscow State Technical University of Information Technologies, Radio Engineering, and Electronics, pr. Vernadskogo 78, Moscow, 119454, Russia

    V. S. Pokatilov, A. O. Makarova & V. V. Pokatilov

  2. Moscow State University, Moscow, 119991, Russia

    V. S. Rusakov & M. E. Matsnev

Authors
  1. V. S. Pokatilov
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  2. V. S. Rusakov
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  3. A. O. Makarova
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  4. V. V. Pokatilov
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  5. M. E. Matsnev
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Correspondence to V. S. Pokatilov.

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Original Russian Text © V.S. Pokatilov, V.S. Rusakov, A.O. Makarova, V.V. Pokatilov, M.E. Matsnev, 2016, published in Fizika Tverdogo Tela, 2016, Vol. 58, No. 2, pp. 307–310.

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Pokatilov, V.S., Rusakov, V.S., Makarova, A.O. et al. Specific features of magnetic states of impurity iron ions in the perovskite La0.75Sr0.25Co0.98 57Fe0.02O3 . Phys. Solid State 58, 315–318 (2016). https://doi.org/10.1134/S1063783416020220

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  • DOI: https://doi.org/10.1134/S1063783416020220

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