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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, Sebastià Valle, Núria del Navau Ros, Carles Baró, M. D. Estradé Albiol, Sònia Peiró Martínez, Francisca Pané, Salvador Nelson, Bradley J. Sanchez, Alvaro Nogués, Josep Pellicer Vilà, Eva M. 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 (Enginyeria Electrònica i Biomèdica) |
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657929.pdf | 1.35 MB | Adobe PDF | View/Open |
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