Angular dependence of the coercivity and remanence of ordered arrays of Co nanowires |
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| Authors: | R Lavín C Gallardo JL Palma J Escrig JC Denardin |
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| Institution: | 1. Departamento de Física, Universidad de Santiago de Chile, USACH, Av. Ecuador 3493, Santiago, Chile;2. Facultad de Ingeniería, Universidad Diego Portales, UDP, Ejército 441, Santiago, Chile;3. Center for the Development of Nanoscience and Nanotechnology, CEDENNA, Av. Ecuador 3493, Santiago, Chile |
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| Abstract: | The angular dependence of the coercivity and remanence of ordered hexagonal arrays of Co nanowires prepared using anodic aluminum oxide templates was investigated. The experimental evolution of coercivity as a function of the angle, in which the external field is applied, is interpreted considering micromagnetic simulations. Depending on the angle between the axis of the wire and the applied magnetic field direction our results show that the magnetization reversal mode changes from vortex to a transverse domain wall. Besides, we observed that the dipolar interactions cause a reduction in coercive fields, mainly in the direction of easy magnetization of the nanowires. Good agreement between numerical and experimental data is obtained. |
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| Keywords: | Coercivity and remanence Magnetization reversal Magnetic nanowire |
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