Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/124748
Title: Tailoring Staircase-like Hysteresis Loops in Electrodeposited Tri-segmented Magnetic Nanowires: a Strategy toward Minimization of Interwire Interactions
Author: Zhang, Jin
Agramunt Puig, Sebastia
Valle, Nuria Del
Navau, Carles
Baro, Maria D.
Estradé Albiol, Sònia
Peiró Martínez, Francisca
Pané, Salvador
Nelson, Bradley J.
Sanchez, Alvaro
Nogués, Josep
Pellicer, Eva
Sort, Jordi
Keywords: Nanotecnologia
Magnetisme
Nanoestructures
Nanotechnology
Magnetism
Nanostructures
Issue Date: 25-Jan-2016
Publisher: American Chemical Society
Abstract: A new strategy to minimize magnetic interactions between nanowires (NWs) dispersed in a fluid is proposed. Such a strategy consists of preparing trisegmented NWs containing two antiparallel ferromagnetic segments with dissimilar coercivity separated by a nonmagnetic spacer. The trisegmented NWs exhibit a staircase-like hysteresis loop with tunable shape that depends on the relative length of the soft- and hard-magnetic segments and the respective values of saturation magnetization. Such NWs are prepared by electrodepositing CoPt/Cu/Ni in a polycarbonate (PC) membrane. The antiparallel alignment is set by applying suitable magnetic fields while the NWs are still embedded in the PC membrane. Analytic calculations are used to demonstrate that the interaction magnetic energy from fully compensated trisegmented NWs with antiparallel alignment is reduced compared to a single-component NW with the same length or the trisegmented NWs with the two ferromagnetic counterparts parallel to each other. The proposed approach is appealing for the use of magnetic NWs in certain biological or catalytic applications where the aggregation of NWs is detrimental for optimized performance.
Note: Versió postprint del document publicat a: https://doi.org/10.1021/acsami.5b11747
It is part of: ACS Applied Materials & Interfaces, 2016, vol. 8, num. 6, p. 4109-4117
URI: http://hdl.handle.net/2445/124748
Related resource: https://doi.org/10.1021/acsami.5b11747
ISSN: 1944-8244
Appears in Collections:Articles publicats en revistes (Institut de Nanociència i Nanotecnologia (IN2UB))
Articles publicats en revistes (Electrònica)

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