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Автор(ы) : Abramova G. M., Knyazev Yu. V., Bayukov O. A., Kubrin S. P.
Заглавие : Magnetic states of Fe2+ ions in FexMn1–xS induced by chemical pressure
Место публикации : Phys. Solid State. - 2021. - Vol. 63, Is. 1. - P.68-74. - ISSN 10637834 (ISSN), DOI 10.1134/S1063783421010029
Примечания : Cited References: 25. - The work was partially supported by the Ministry of Science and Higher Education of the Russian Federation (state contract in the sphere of scientific activities, Southern Federal University, 2020)
Аннотация: Influence of the chemical pressure (x) in single crystals of FexMn1 – xS (0.12 ≤ x ≤ 0.29) on the spin state of iron ions was studied by Mössbauer spectroscopy in the temperature range from 4.2 to 300 K. Peculiarities of formation of the paramagnetic and antiferromagnetic phases of solid solutions were found. Substitution of Fe2+ cations in the high-spin state for Mn2+ was found to occur in FexMn1 – xS as x changes. A decrease in the distance between the ions in FexMn1 – xS induces changes in the state of the Fe2+ ions in the samples with x = 0.25 and 0.29. The asymmetry parameter of the electric field gradient (EFG) tensor and the angle between the directions of the magnetic moment and the principal axis of the electric field gradient were found to change in the magnetically ordered phase at 4.2 K; the angle between the magnetic moment and the electric field gradient axis changes from 21° in the sample with x = 0.12 to 33° when x = 0.29.
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