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Magnetization reversal in cobalt and nickel electrodeposited nanowires

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Ounadjela, K. Ferre, R. Louail, L. George, J.M. Maurice, J.L. Piraux, Luc [UCL] Dubois, S. [UCL]

We have investigated the magnetization reversal processes in arrays of sub-micron Ni and Co wires by means of magnetization and torque experiments together with micromagnetic calculations. The wires were produced by electrodeposition in the cylindrical pores of track-etched polymer membranes. Diameters in the range 35-400 nm have been studied. The arrays of Co and Ni nanowires display different magnetic behaviors. Particular emphasis is given to the competing shape and crystal magnetic anisotropies that exist in the Co nanowire system. In both systems, explaining the experimental results requires domain formation, except for the smallest diameters where single domain behavior occurs. (C) 1997 American Institute of Physics.

Document type Communication à un colloque (Conference Paper) – Présentation orale avec comité de sélection
Language Anglais
Conference "41st Annual Conference on Magnetism and Magnetic Materials", ATLANTA(Ga) (Nov 12-15, 1996)
Affiliation UCL - FSA/MAPR - Département des sciences des matériaux et des procédés
Links
  1. Hehn M., Ounadjela K., Bucher J.-P., Rousseaux F., Decanini D., Bartenlian B., Chappert C., Nanoscale Magnetic Domains in Mesoscopic Magnets, 10.1126/science.272.5269.1782
  2. New R. M. H., Physical and magnetic properties of submicron lithographically patterned magnetic islands, 10.1116/1.587908
  3. Gibson G. A., Schultz S., Magnetic force microscope study of the micromagnetics of submicrometer magnetic particles, 10.1063/1.352794
  4. Whitney T. M., Searson P. C., Jiang J. S., Chien C. L., Fabrication and Magnetic Properties of Arrays of Metallic Nanowires, 10.1126/science.261.5126.1316
  5. Chou Stephen Y., Krauss Peter R., Kong Linshu, Nanolithographically defined magnetic structures and quantum magnetic disk (invited), 10.1063/1.362440
  6. Hehn M., Phys. Rev. B, 54
  7. Piraux L., George J. M., Despres J. F., Leroy C., Ferain E., Legras R., Ounadjela K., Fert A., Giant magnetoresistance in magnetic multilayered nanowires, 10.1063/1.112672
Bibliographic reference Ounadjela, K. ; Ferre, R. ; Louail, L. ; George, J.M. ; Maurice, J.L. ; et. al. Magnetization reversal in cobalt and nickel electrodeposited nanowires.41st Annual Conference on Magnetism and Magnetic Materials (ATLANTA(Ga), Nov 12-15, 1996).
Permanent URL http://hdl.handle.net/2078.1/62761