Jaque, D.González Herrera, Elvira MaríaMartín, J. I.Anguita,, J. V.Vicent López, José Luis2023-06-202023-06-202002-10-070003-695110.1063/1.1512947https://hdl.handle.net/20.500.14352/60172©2002 American Institute of Physics. The authors want to thank Spanish CICYT MAT2002- 04543 and ESF Vortex program. D.J. and E.M.G. thank Ministerio de Ciencia y Tecnología (Spain) for Ramón y Cajal Contracts.Arrays of submicrometric Ni lines have been fabricated in superconducting Nb films by electron beam lithography. In the mixed state, these arrays induce strong anisotropy in the dissipation behavior. The dissipation is reduced several orders of magnitude, in the whole applied magnetic field range, when the vortex motion is perpendicular to the Ni lines (applied current parallel to them) in comparison with dissipation of vortices moving parallel to the lines. In addition, for the samples studied in this work, a change in the slope of the rho(B) curves is observed when the vortices move perpendicular to the lines and the vortex lattice parameter matches the width of the Ni lines.engjournal articlehttp://dx.doi.org/10.1063/1.1512947http://aip.scitation.org/open access538.9Superconducting filmsRegular arrayMagnetic dotsLatticesFísica de materialesFísica del estado sólido2211 Física del Estado Sólido