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Static and Dynamic Magnetization Investigation in Permalloy Electrodeposited onto High Resistive N-Type Silicon Substrates

Laboratory of Spintronics and Nanomagnetism (LabSpiN), Departamento de Física, Universidade Federal de Viçosa, Viçosa-MG 36570-900, Brazil
Unidade de Ensino Superior, Universidade do Estado de Minas Gerais, Ubá-MG 36500-000, Brazil
Instituto de Física, Núcleo de Física Aplicada, Universidade de Brasília, Brasília-DF 70910-900, Brazil
School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, China
Author to whom correspondence should be addressed.
Academic Editors: Eva Pellicer and Jordi Sort
Coatings 2017, 7(2), 33;
Received: 19 December 2016 / Revised: 13 February 2017 / Accepted: 15 February 2017 / Published: 20 February 2017
(This article belongs to the Special Issue Thin Films and Patterned Structures by Electrochemical Methods)
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The present study reports on the development of permalloy thin films obtained by electrodeposition onto low-doped n-type silicon substrates. While changing from non-percolated clusters into percolated thin films upon increasing the electrodeposition time, the static and dynamic magnetic properties of the as-obtained structures were investigated. We found the experimental magnetic results to be in very good agreement with the simulations performed by solving the Landau-Lifshitz for the dynamics of the magnetic moment. For short electrodeposition times we found the static and dynamic magnetization behavior of the as-formed nanoclusters evidencing vortex magnetization with random chirality and polarization, which is explained in terms of dipolar interaction minimization. Indeed, it is herein emphasized that recent applications of ferromagnetic materials in silicon-based spintronic devices, such as logic and bipolar magnetic transistors and magnetic memories, have revived the possible utilization of low cost and simple electrodeposition techniques for the development of these upcoming hetero-nanostructured devices. View Full-Text
Keywords: electrodeposition; ferromagnetic resonance; vortex; spintronics electrodeposition; ferromagnetic resonance; vortex; spintronics

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Freitas, K.; Toledo, J.R.; Figueiredo, L.C.; Morais, P.C.; Felix, J.F.; De Araujo, C.I.L. Static and Dynamic Magnetization Investigation in Permalloy Electrodeposited onto High Resistive N-Type Silicon Substrates. Coatings 2017, 7, 33.

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