Artículos de revistas
Magnetostatic behaviour of antidot arrays under the local influence of nanopillars
Registro en:
Journal Of Physics D-applied Physics. Iop Publishing Ltd, v. 45, n. 50, 2012.
0022-3727
WOS:000311833000003
10.1088/0022-3727/45/50/505002
Autor
Beron, F
Knobel, M
Pirota, KR
Institución
Resumen
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) We fabricated highly ordered patterned Permalloy nanometric structures by means of ion beam sputtering on top of an anodic aluminium oxide nanoporous template. First-order reversal curve (FORC) results and micromagnetic simulations indicate the presence of Permalloy inside one side of the pores, leading to a nanopillar array anisotropically arranged combined with an antidot array. The strong shape anisotropy of the pillar forces it to maintain the magnetization along its axis, even for a large in-plane applied field. This phenomenon induces out-of-plane hysteresis, as well as in-plane anisotropic behaviour. Depending on the in-plane applied field direction, the presence of nanopillars differently modifies the regular domain pattern, and therefore they could act as a new parameter for tailoring of magnetic anisotropy in antidot arrays. 45 50 Fonds Quebecois de Recherche sur la Nature et les Technologies (FQRNT), Canada Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)