Efficiency of magnetostatic protection using nanostructured permalloy shielding coatings depending on their microstructure
Zubar, Tatiana (Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus. Laboratory of Magnetic Films Physics (Belarus))
Kotelnikova, Anna (Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus. Laboratory of Magnetic Films Physics (Belarus))
Kaniukov, Egor (National University of Science and Technology MISiS. Department of Technology of Electronics Materials (Russia))
Kutuzau, Maksim (Leibniz Institute for Solid State and Materials Research Dresden (Germany))
Leistner, Karin (Leibniz Institute for Solid State and Materials Research Dresden (Germany))
Nielsch, Kornelius (Leibniz Institute for Solid State and Materials Research Dresden (Germany))
Vershinina, Tatiana (Joint Institute for Nuclear Research (Russia))
Tishkevich, Daria (South Ural State University. Laboratory of Single Crystal Growth (Russia))
Kanafyev, Oleg (Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus. Laboratory of Magnetic Films Physics (Belarus))
Kozlovskiy, Artem (The Institute of Nuclear Physics (Kazakhstan))
Zdorovets, Maxim (The Ural Federal University. Department of Intelligent Information Technologies (Russia))
Fedosyuk, Valery (Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus. Laboratory of Magnetic Films Physics (Belarus))
Trukhanov, Alex (South Ural State University. Laboratory of Single Crystal Growth (Russia))
Grabchikov, Sergey (Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus. Laboratory of Magnetic Films Physics (Belarus))

Fecha:	2021
Resumen:	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 electrodeposition. The coatings' composition, crystal structure, surface microstructure, magnetic domain structure, 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 maximum value of the shielding efficiency, significantly expand the working range in the nanostructured permalloy shielding coatings. As a result, a dependence between the grain and domain structure and the efficiency of magnetostatic shielding was found.
Ayudas:	European Commission 861145
Derechos:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió acceptada per publicar
Materia:	Permalloy ; Pulsed electrodeposition ; Nanostructured coating ; Microstructure ; Magnetostatic ; Shielding
Publicado en:	Nanomaterials, Vol. 11, Issue 3 (March 2021) , art. 634, ISSN 2079-4991

DOI: 10.3390/nano11030634
PMID: 33806353

Postprint 21 p, 913.7 KB

13 p, 3.3 MB

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Documentos de investigación > Documentos de los grupos de investigación de la UAB > Centros y grupos de investigación (producción científica) > Ciencias > Grupo de nanoingeniería de materiales, nanomagnetismo y nanomecánica (Gnm3)
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