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Issue 17, 2016
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Influence of the electrodeposition potential on the crystallographic structure and effective magnetic easy axis of cobalt nanowires

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Abstract

Cobalt nanowires (NWs) have been synthesized by electrodeposition inside the pores of anodized aluminium oxide templates, at different values of applied deposition potential. The as-deposited NWs are parallel to one another and exhibit a high geometrical aspect ratio. The crystal structure of these NWs shows a strong dependence on the applied deposition potential during synthesis. X-ray diffraction indicates the predominance of hexagonal-closed-packed (HCP) phase with (002) texture at low applied deposition potentials, whereas a reorientation of the c-axis of the HCP structure is observed for high electrodeposition potentials. Moreover, for a given electrodeposition time, the length of the NWs also increases with the applied potential. As a result of these structural changes, a switch in the magnetic easy axis, from parallel to perpendicular to the NW axis, occurs depending on the applied potential. A simplified model is used to account for this reorientation of the effective magnetic anisotropy direction, which takes into account the interplay between shape anisotropy, magnetocrystalline anisotropy and interwire dipolar interactions.

Graphical abstract: Influence of the electrodeposition potential on the crystallographic structure and effective magnetic easy axis of cobalt nanowires

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Publication details

The article was received on 15 jan. 2016, accepted on 16 jan. 2016 and first published on 28 jan. 2016


Article type: Paper
DOI: 10.1039/C6RA01311B
Citation: RSC Adv., 2016,6, 14266-14272
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    Influence of the electrodeposition potential on the crystallographic structure and effective magnetic easy axis of cobalt nanowires

    M. I. Irshad, N. M. Mohamed, M. Z. Abdullah, M. S. M. Saheed, A. Mumtaz, M. Yasar, A. Yar, M. A. Zeeshan and J. Sort, RSC Adv., 2016, 6, 14266
    DOI: 10.1039/C6RA01311B

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