Giant magnetoimpedance effect in Co2FeAl single layered and Co2FeAl/Ag multilayered films in amorphous substrates

Silva, Anderson Max Cirilo da; Escobar, Vivian Montarddo; Callegari, G.L.; Agra, Kennedy Leite; Feitosa, Carlos Chesman de Araújo; Bohn, Felipe; Corrêa, Marcio Assolin

Giant magnetoimpedance effect in Co2FeAl single layered and Co2FeAl/Ag multilayered films in amorphous substrates

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dc.contributor.author	Silva, Anderson Max Cirilo da
dc.contributor.author	Escobar, Vivian Montarddo
dc.contributor.author	Callegari, G.L.
dc.contributor.author	Agra, Kennedy Leite
dc.contributor.author	Feitosa, Carlos Chesman de Araújo
dc.contributor.author	Bohn, Felipe
dc.contributor.author	Corrêa, Marcio Assolin
dc.date.accessioned	2020-07-03T13:33:31Z
dc.date.available	2020-07-03T13:33:31Z
dc.date.issued	2015-05-08
dc.description.resumo	We investigate the structural, quasi-static and dynamic magnetic properties of a Co2FeAl single layered film and a Co2FeAl/Ag multilayer, both grown onto amorphous substrate. We verify that both films have A2 structure and anisotropic magnetic behavior, as well as present the well-known magnetoimpedance behavior of anisotropic systems. The magnetization dynamics is discussed in terms of the mechanisms that govern the magnetoimpedance effect in a wide range of frequencies, as well as of the orientation between the external magnetic field and electrical current with respect to the magnetic anisotropy. The single layer has the largest magnetoimpedance variations values of 50% for 3.0 GHz, while the multilayer present considerable higher values, reaching to 200% at the same frequency. The association of kind of sample structure, anisotropic magnetic behavior and low damping parameter α of the CFA alloy opens possibilities to reach higher magnetoimpedance performances. The results place the CFA full-Heusler alloy as a promising candidate for applications in magnetoimpedance-based sensors and radio frequency range devices	pt_BR
dc.identifier.citation	SILVA, A.M.; ESCOBAR, V.M.; CALLEGARI, G.L.; AGRA, K.; CHESMAN, C.; BOHN, F.; CORRÊA, M.A.. Giant magnetoimpedance effect in Co2FeAl single layered and Co2FeAl/Ag multilayered films in amorphous substrates. Materials Letters (General ed.), v. 156, p. 90-93, 2015. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0167577X15007004?via%3Dihub. Acesso em: 23 mai. 2020. https://doi.org/10.1016/j.matlet.2015.04.147.	pt_BR
dc.identifier.doi	10.1016/j.matlet.2015.04.147
dc.identifier.issn	0167-577X
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/29420
dc.language	en	pt_BR
dc.publisher	Elsevier	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	Spintronics	pt_BR
dc.subject	CFA	pt_BR
dc.subject	Magnetoimpedance	pt_BR
dc.subject	Ferromagnetic films	pt_BR
dc.title	Giant magnetoimpedance effect in Co2FeAl single layered and Co2FeAl/Ag multilayered films in amorphous substrates	pt_BR
dc.type	article	pt_BR