Efficiency of magnetostatic protection using nanostructured permalloy shielding coatings depending on their microstructure
Zubar T, Grabchikov S, Kotelnikova A, Kaniukov E, Kutuzau M, Leistner K, Nielsch K, Vershinina T, Tishkevich D, Kanafyev O, Kozlovskiy A, Zdorovets M, Fedosyuk V, Trukhanov A (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 11
Pages Range: 1-13
Article Number: 634
Journal Issue: 3
DOI: 10.3390/nano11030634
Abstract
The effect of microstructure on the efficiency of shielding or shunting of the magnetic flux by permalloy shields was investigated in the present work. For this purpose, the FeNi shielding coatings with different grain structures were obtained using stationary and pulsed electrodeposi-tion. The coatings’ composition, crystal structure, surface microstructure, magnetic domain struc-ture, and shielding efficiency were studied. It has been shown that coatings with 0.2–0.6 µm grains have a disordered domain structure. Consequently, a higher value of the shielding efficiency was achieved, but the working range was too limited. The reason for this is probably the hindered movement of the domain boundaries. Samples with nanosized grains have an ordered two-domain magnetic structure with a permissible partial transition to a superparamagnetic state in regions with a grain size of less than 100 nm. The ordered magnetic structure, the small size of the domain, and the coexistence of ferromagnetic and superparamagnetic regions, although they reduce the maxi-mum value of the shielding efficiency, significantly expand the working range in the nanostruc-tured permalloy shielding coatings. As a result, a dependence between the grain and domain structure and the efficiency of magnetostatic shielding was found.
Involved external institutions
National Academy of Sciences of Belarus (NASB) / Нацыянальная акадэмія навук Беларусі
Belarus (BY)
Institute of Nuclear Physics Kazakhstan
Kazakhstan (KZ)
National University of Science and Technology "MISIS"
Russian Federation (RU)
Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden
Germany (DE)
Joint Institute for Nuclear Research (JINR) / Объединённый институт ядерных исследований (ОИЯИ)
Russian Federation (RU)
Belarus (BY)
Institute of Nuclear Physics Kazakhstan
Kazakhstan (KZ)
National University of Science and Technology "MISIS"
Russian Federation (RU)
Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden
Germany (DE)
Joint Institute for Nuclear Research (JINR) / Объединённый институт ядерных исследований (ОИЯИ)
Russian Federation (RU)
How to cite
APA:
Zubar, T., Grabchikov, S., Kotelnikova, A., Kaniukov, E., Kutuzau, M., Leistner, K.,... Trukhanov, A. (2021). Efficiency of magnetostatic protection using nanostructured permalloy shielding coatings depending on their microstructure. Nanomaterials, 11(3), 1-13. https://dx.doi.org/10.3390/nano11030634
MLA:
Zubar, Tatiana, et al. "Efficiency of magnetostatic protection using nanostructured permalloy shielding coatings depending on their microstructure." Nanomaterials 11.3 (2021): 1-13.
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