71007 20180622124306.0 doi 10.1063/1.4890358 sideral 89986 ART-2014-89986 eng Palmero, E.M. Magnetic behavior of NiCu nanowire arrays: Compositional, geometry and temperature dependence 2014 Access copy available to the general public Unrestricted Arrays of Ni100-xCux nanowires ranging in composition 0¿=¿x¿=¿75, diameter from 35 to 80¿nm, and length from 150¿nm to 28¿µm have been fabricated by electrochemical co-deposition of Ni and Cu into self-ordered anodic aluminum oxide membranes. As determined by X-ray diffraction and Transmission Electron Microscopy, the crystalline structure shows fcc cubic symmetry with [111] preferred texture and preferential Ni or Cu lattice depending on the composition. Their magnetic properties such as coercivity and squareness have been determined as a function of composition and geometry in a Vibrating Sample Magnetometer in the temperature range from 10 to 290¿K for applied magnetic fields parallel and perpendicular to the nanowires axis. Addition of Cu into the NiCu alloy up to 50% enhances both parallel coercivity and squareness. For the higher Cu content, these properties decrease and the magnetization easy axis becomes oriented perpendicular to the wires. In addition, coercivity and squareness increase by decreasing the diameter of nanowires which is ascribed to the increase of shape anisotropy. The temperature dependent measurements reflect a complex behavior of the magnetic anisotropy as a result of energy contributions with different evolution with temperature. info:eu-repo/grantAgreement/ES/MINECO/MAT2010-20798-C05-01 info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 2.183 2014 PHYSICS, APPLIED 42 / 141 = 0.298 2014 Q2 T1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Bran, C. Del Real, R.P. (orcid)0000-0002-6761-6171 Magen, C. Universidad de Zaragoza Vazquez, M. 2003 395 Universidad de Zaragoza Departamento de Física de la Materia Condensada Física de la Materia Condensada 116 (2014), 033908 [6 pp] J. appl. physi. Journal of Applied Physics 0021-8979 270657 http://zaguan.unizar.es/record/71007/files/texto_completo.pdf Versión publicada 133851 http://zaguan.unizar.es/record/71007/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:71007 articulos driver 2018-06-22-11:08:21 ARTICLE