Agradecimentos: This work was supported by the Portuguese Fundacao para a Ciencia e Tecnologia (FCT) and COMPETE 2020 (FEDER) under the projects POCI-01-0145-FEDER-028676 and POCI-01-0145-FEDER-031302, Spanish MINECO under project MAT2017-87072-C4-3-P, and the European Union's Horizon 2020 research...

Agradecimentos: This work was supported by the Portuguese Fundacao para a Ciencia e Tecnologia (FCT) and COMPETE 2020 (FEDER) under the projects POCI-01-0145-FEDER-028676 and POCI-01-0145-FEDER-031302, Spanish MINECO under project MAT2017-87072-C4-3-P, and the European Union's Horizon 2020 research and innovation program under the Marie Sklodowska-Curie Grant Agreement No. 734801. M.P.P. acknowledges FCT for grant SFRH/BPD/84948/2012, supported by funding POPH/FSE. C.T.S., and D.N. thanks FCT for financial support through the Investigador FCT program (Contracts No. IF/01159/2015 and IF/01191/2013). S.M. thanks CNPq (Brazil) for financial support through the grant No. 234513/2014-4. F.B and K.R.P. acknowledge to Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)

Abstract: A set of multi-segmented Fe/Cu nanowires were synthesized by a two-step anodization process of aluminum substrates and a pulsed electrodeposition technique using a single bath. While both Fe segment length and diameter were kept constant to (30 +/- 7) and (45 +/- 5) nm, respectively, Cu...

Abstract: A set of multi-segmented Fe/Cu nanowires were synthesized by a two-step anodization process of aluminum substrates and a pulsed electrodeposition technique using a single bath. While both Fe segment length and diameter were kept constant to (30 +/- 7) and (45 +/- 5) nm, respectively, Cu length was varied between (15 +/- 5) and (120 +/- 10) nm. The influence of the non-magnetic layer thickness variation on the nanowire magnetic properties was investigated through first-order reversal curve (FORC) measurements and micromagnetic simulations. Our analysis confirmed that, in the multi-segmented Fe/Cu nanowires with shorter Cu segments, the dipolar coupling between Fe segments controls the nanowire magnetic behavior, and its performance is like that of a homogenous Fe nanowire array of similar dimensions. On the other hand, multi-segmented Fe/Cu nanowires with larger Cu segments act like a collection of non-interacting magnetic entities (along the nanowire axis), and their global behavior is mainly controlled by the neighbor-to-neighbor nanodisc dipolar interactions

CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ

234513/2014-4

FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP

Aberto