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Vélez, M. ; González Herrera, Elvira María ; Martín, J. I. ; Vicent López, José Luis | American Physical Society | 1996-07-01?-axis-oriented EuBa_2Cu_3O_7/PrBa_2Cu_3O_7 (EBCO/PBCO) superlattices allow us to separate contributions to the anisotropy coming from the natural layered structure of EBCO from that introduced by the artificial layering with PBCO. The angular d[...]texto impreso
Perez de Lara, Daniel ; Alija, A. ; González Herrera, Elvira María ; Martín, J. I. ; Vélez, M. ; Colino, J. L. ; Anguita,, J. V. ; Vicent López, José Luis | American Institute of Physics | 2009-03-23Superconducting a-Mo_(3)Si and Nb films have been grown on arrays of Ni nanodots. We have studied the vortex lattice dynamics close to critical temperatures. Different vortex lattice configurations are obtained with the same array unit cell. The[...]texto impreso
Ruiz-Valdepeñas Martín de Almagro, Luis ; Vélez, M. ; Valdés Bango, F. ; Álvarez Prado, L.M. ; García Alonso, F.J. ; Martín, J.I. ; Navarro Palma, Elena ; Alameda, J.M. ; Vicent López, José Luis | American Institute of Physics | 2014-06-07Magnetization reversal processes have been studied in hybrid magnetic/superconducting Nd-Co/Nb bilayers by the comparison of out-of-plane magnetic hysteresis loops and superconducting phase diagrams as a function of magnetic layer thickness and [...]texto impreso
Navarro Palma, Elena ; Vélez, M. ; Huttel, Y. ; Pérez Junquera, A. ; Martín, J. Y. ; Lima, O. F. de ; Cebollada, A. ; Alameda, J. M. ; Vicent López, José Luis | American Institute of Physics | 2009-02-01Shifted hysteresis loops characteristic of the exchange bias effect between a ferromagnet and an antiferromagnet are demonstrated in structures formed by a 2.5 nm Cr layer deposited on top of an array of Fe nanoislands (Cr/Fe-nanoislands). This [...]texto impreso
Rollano, V. ; Muñoz Noval, Álvaro ; Gómez, A. ; Valdés Bango, F. ; Martín, J.I. ; Vélez, M. ; Osorio, M. R. ; Granados, D. ; González Herrera, Elvira María ; Vicent López, José Luis | IOP publishing ltd | 2019-06-14We have designed, fabricated and tested a robust superconducting ratchet device based on topologically frustrated spin ice nanomagnets. The device is made of a magnetic Co honeycomb array embedded in a superconducting Nb film. This device is bas[...]texto impreso
Pérez de Lara, D. ; Alija, A. ; González Herrera, Elvira María ; Vélez, M. ; Martín, J. I. ; Vicent López, José Luis | American Physical Society | 2010-11-03Arrays of Ni nanodots embedded in Nb superconducting films have been fabricated by sputtering and electron-beam lithography techniques. The arrays are periodic triangular lattices of circular Ni dots arranged in a kagomélike pattern with broken [...]
