Controlling magnetic vortex pairs in dipolar coupling Py elliptical nanocylinders

Author:

Dantas J. T. S.1,Souza R. M.1,Carriço A. S.1,Martins S. M. S. B.2ORCID,Oliveira L. L.3,Dantas Ana L.34ORCID

Affiliation:

1. Departamento de Física, Universidade Federal do Rio Grande do Norte, 59078-970 Natal, RN, Brazil

2. Departamento de Física, Universidade Estadual do Maranhão, 65055-310 São Luís, MA, Brazil and Departamento de Matemática e Informática, Universidade Estadual do Maranhão, 65055-310 São Luís, MA, Brazil

3. Departamento de Ciência e Tecnologia, Universidade do Estado do Rio Grande do Norte, 59.120-200 Natal, RN, Brazil

4. Departamento de Física, Universidade do Estado do Rio Grande do Norte, 59.610-210 Mossoró, RN, Brazil

Abstract

We report a theoretical study of the magnetic profiles of vortex pairs in dipolar coupling thin Ni[Formula: see text]Fe[Formula: see text] (Permalloy Py™) elliptical nanocylinders. We show that the external magnetic field route can control the magnetic phases at remanence. Although the isolated nanocylinder forms one vortex in the remanence, in the presence of another, the dipolar interaction can induce a vortex pair in each nanocylinder. Moreover, our results show that we can adjust the two pairs of the magnetic vortex via the external magnetic field route. For the major-axis route, the pair of magnetic vortices in a nanocylinder is entirely antiparallel to the pair of magnetic vortices in the other nanocylinder. In contrast, both nanocylinders’ pairs of magnetic vortices are completely parallel for the minor-axis route at remanence. In this case, the magnetic patterns are the same in both nanocylinders. As an application, we present the results for a pair of identical and coaxial Py elliptical (245 [Formula: see text] 405 [Formula: see text] 25 nm[Formula: see text]) nanocylinders separated by a nonmagnetic spacer of 50 nm.

Funder

Conselho Nacional de Desenvolvimento Científico e Tecnológico

Publisher

AIP Publishing

Subject

General Physics and Astronomy

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Evidence for vortex state in Fe2CoGe thin films using FORC and magnetic imaging;Journal of Magnetism and Magnetic Materials;2023-01

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