Please use this identifier to cite or link to this item:
http://repositorio.unicamp.br/jspui/handle/REPOSIP/326845
Type: | Artigo |
Title: | Magnetic Interactions In Compositionally Modulated Nanowire Arrays Magnetic interactions in compositionally modulated nanowire arrays |
Author: | Palmero, E. M. Béron, F. Bran, C. Del Real, R. P. Vázquez, M. |
Abstract: | Series of high hexagonally ordered compositionally modulated nanowire arrays, with different Cu layer and FeCoCu segment thicknesses and a constant diameter of 35 nm, were fabricated by electroplating from a single electrolytic bath into anodic aluminum oxide membranes. The objective of the study was to determine the influence of ferromagnetic (FM) segment and non-ferromagnetic (NFM) layer thickness on the magnetic properties, particularly coercivity and magnetic interactions. First-order reversal curve (FORC) measurements and simulations were performed to quantify the effect of the inter-/intra-nanowire magnetostatic interactions on the coercivity and interaction field distributions. The FORC coercivity increases for a thick NFM layer and long FM segments due to decoupling of the the FM segments and the increased shape anisotropy, respectively. On the other hand, the interaction field presents a parallel strong reduction for a thick NFM layer and thin FM segments, which is ascribed to a similar NFM/FM thickness ratio and degree of FM segment decoupling along the nanowire. Series of high hexagonally ordered compositionally modulated nanowire arrays, with different Cu layer and FeCoCu segment thicknesses and a constant diameter of 35 nm, were fabricated by electroplating from a single electrolytic bath into anodic aluminum oxide membranes. The objective of the study was to determine the influence of ferromagnetic (FM) segment and non-ferromagnetic (NFM) layer thickness on the magnetic properties, particularly coercivity and magnetic interactions. First-order reversal curve (FORC) measurements and simulations were performed to quantify the effect of the inter-/intra-nanowire magnetostatic interactions on the coercivity and interaction field distributions. The FORC coercivity increases for a thick NFM layer and long FM segments due to decoupling of the the FM segments and the increased shape anisotropy, respectively. On the other hand, the interaction field presents a parallel strong reduction for a thick NFM layer and thin FM segments, which is ascribed to a similar NFM/FM thickness ratio and degree of FM segment decoupling along the nanowire. |
Subject: | Cylindrical Nanowire Compositional Modulation First-order Reversal Curve (forc) Magnetic Interactions Nanofios, Curva de inversão de primeira ordem, Interações magnéticas |
Country: | Reino Unido |
Editor: | Institute of Physics Publishing |
Citation: | Nanotechnology. Iop Publishing Ltd, v. 27, p. , 2016. |
Rights: | fechado |
Identifier DOI: | 10.1088/0957-4484/27/43/435705 |
Address: | https://iopscience.iop.org/article/10.1088/0957-4484/27/43/435705/meta |
Date Issue: | 2016 |
Appears in Collections: | IFGW - Artigos e Outros Documentos |
Files in This Item:
File | Size | Format | |
---|---|---|---|
000385486000005.pdf | 1.8 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.