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01.01.2024 | ELECTRICAL AND MAGNETIC PROPERTIES

Magnetic State of Cobalt in Layered Chalcogenide Fe₄Co₃Se₈

verfasst von: Yu. V. Piskunov, V. V. Ogloblichev, A. F. Sadykov, D. F. Akramov, A. G. Smolnikov, A. P. Gerashchenko, N. V. Selezneva, N. V. Baranov

Erschienen in: Physics of Metals and Metallography | Ausgabe 1/2024

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Abstract

The researches of the structural and magnetic properties of the layered chalcogenide Fe₄Co₃Se₈, which has a ferrimagnetic order below T = 196 K, have been performed by means of X-ray diffraction, magnetic susceptibility measurements, and ⁵⁹Co nuclear magnetic resonance (NMR) spectroscopy. It is found that the effective magnetic moment of iron ions is μ_eff ≈ 5.90(5) μ_B. The components of the magnetic shift and electric field gradient tensors at the Co nuclei sites have been determined. The hyperfine field induced on Co nuclei from neighboring iron ions has been estimated from the temperature dependences of the shift and susceptibility in Fe₄Co₃Se₈. It was also established that cobalt ions in Fe₄Co₃Se₈, as well as in the Co₇Se₈ compound, do not have intrinsic magnetic moment, but they do have a moment induced from neighboring iron ions \(\mu _{{{\text{eff}}}}^{{{\text{Co}}}}\) ≈ 0.36(4) μ_B, which decreases at the magnetic ordering to 0.07(1)μ_B due to mutual compensation of contributions from neighboring iron ions.

Vorheriger Artikel Micromagnetic Simulation of Ferromagnetic Resonance in a Nanosized Bilayer Exchange-Coupled Square-Shaped Ferromagnetic Film

Nächster Artikel Hyperfine Interactions in Dichalcogenides CrxNbSe2 (x = 0.33, 0.5): A 93Nb NMR Study

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Titel: Magnetic State of Cobalt in Layered Chalcogenide Fe4Co3Se8
verfasst von: Yu. V. Piskunov
V. V. Ogloblichev
A. F. Sadykov
D. F. Akramov
A. G. Smolnikov
A. P. Gerashchenko
N. V. Selezneva
N. V. Baranov
Publikationsdatum: 01.01.2024
Verlag: Pleiades Publishing
Erschienen in: Physics of Metals and Metallography / Ausgabe 1/2024
Print ISSN: 0031-918X
Elektronische ISSN: 1555-6190
DOI: https://doi.org/10.1134/S0031918X23602469

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