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Controllable synthesis of ferromagnetic–antiferromagnetic core–shell NWs with tunable magnetic properties

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Abstract

Several nanotechnology applications are based on the promising scheme of highly anisotropic magnetic nanomaterials. Using this idea, we investigated the structure, magnetic properties, and interfacial exchange anisotropy effects of the Ni/Cr2O3 and Fe/Cr2O3 core–shell nanowires (NWs) geometry. A template-based strategy was developed to synthesize Ni (Fe)–Cr2O3 core–shell NWs, which combines a wet-chemical route and electrodeposition within the nanopores of the membranes. Structural determination in correlation with magnetic testing shows that the crystalline Cr2O3-nanoshells (NSs) cause an enhanced exchange bias, providing an extra source of anisotropy that leads to their magnetic stability. This core–shell NWs geometry, with enhanced anisotropy, should, therefore, motivate further study related to the applicability of anisotropic nanostructures. Our design opens a new pathway to obtain optimized heterostructured nanomaterials exhibiting tunable magnetic properties.

Graphical abstract: Controllable synthesis of ferromagnetic–antiferromagnetic core–shell NWs with tunable magnetic properties

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Publication details

The article was received on 28 Feb 2017, accepted on 20 Mar 2017 and first published on 20 Apr 2017


Article type: Paper
DOI: 10.1039/C7NR01471F
Citation: Nanoscale, 2017, Advance Article
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    Controllable synthesis of ferromagnetic–antiferromagnetic core–shell NWs with tunable magnetic properties

    M. Irfan, C. J. Wang, U. Khan, W. J. Li, X. M. Zhang, W. J. Kong, P. Liu, C. H. Wan, Y. W. Liu and X. F. Han, Nanoscale, 2017, Advance Article , DOI: 10.1039/C7NR01471F

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