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Magnetic properties of densely packed arrays of Ni nanowires as a function of their diameter and lattice parameter

AutorVázquez Villalabeitia, Manuel ; Pirota, K. R. ; Hernández-Vélez, M.; Prida, V. M.; Navas, David ; Sanz González, Ruy ; Batallán, Francisco J. ; Velázquez, J.
Palabras claveNickel
Alumina
Nanowires
Nanoporous materials
Membranes
Remanence
Fecha de publicación1-jun-2004
EditorAmerican Institute of Physics
CitaciónJournal of Applied Physics 95(11): 6642 (2004)
ResumenHigh-quality densely packed hexagonal arrays of Ni nanowires have been prepared by filling self-ordered nanopores in alumina membranes. Nanowires with different diameter d (18–83 nm) and lattice parameter D (65 and 105 nm) have been studied by atomic force, high resolution scanning electron microscopies, Rutherford backscattering, and vibrating sample magnetometer techniques. Axial loops coercivity and remanence decrease with increasing ratio diameter to lattice parameter, r, until nanowires start to interconnect locally. Additionally, hysteresis of in-plane loops increases with packing factor. In order to interpret the experimental results, multipolar magnetostatic interactions among nanowires with increasing ratio r are considered.
Descripción3 pages, 4 figures.-- PACS: 81.07.Bc; 75.50.Tt; 75.50.Vv; 75.30.Gw; 68.37.Ps
Versión del editorhttp://dx.doi.org/10.1063/1.1687539
URIhttp://hdl.handle.net/10261/21689
DOI10.1063/1.1687539
ISSN0021-8979
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