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Título : Magnetic properties of densely packed arrays of Ni nanowires as a function of their diameter and lattice parameter
Autor : Vázquez, M., Pirota, K. R., Hernández-Vélez, M., Prida, V. M., Navas, D., Sanz, R., Batallán, F., Velázquez, J.
Palabras clave : Nickel
Alumina
Nanowires
Nanoporous materials
Membranes
Remanence
Fecha de publicación : 1-Jun-2004
Editor: American Institute of Physics
Citación : Journal of Applied Physics 95(11): 6642 (2004)
Resumen: High-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.
Descripción : 3 pages, 4 figures.-- PACS: 81.07.Bc; 75.50.Tt; 75.50.Vv; 75.30.Gw; 68.37.Ps
Versión del editor: http://dx.doi.org/10.1063/1.1687539
URI : http://hdl.handle.net/10261/21689
ISSN: 0021-8979
DOI: 10.1063/1.1687539
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