RT Journal Article
T1 Imprinted labyrinths and percolation in Nd-Co/Nb magnetic/superconducting hybrids
A1 Ruiz-Valdepeñas Martín de Almagro, Luis
A1 Vélez, M.
A1 Valdés Bango, F.
A1 Álvarez Prado, L.M.
A1 García Alonso, F.J.
A1 Martín, J.I.
A1 Navarro Palma, Elena
A1 Alameda, J.M.
A1 Vicent López, José Luis
AB Magnetization 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 of disorder in the magnetic layer induced by a nanostructured copolymer template. A good correlation is found between the regimes corresponding to percolation effects in the superconductor and to the transition from extended to confined superconductivity with the characteristic fields for reverse domain nucleation and fast domain expansion in the magnetic layer, indicating that superconductivity nucleates on the disordered network imprinted on the superconducting layer by the labyrinth domain structure of the magnetic layer. As disorder increases in the magnetic layer, percolation effects disappear from the superconducting transitions in agreement with a more homogeneous magnetization reversal process.
PB American Institute of Physics
SN 0021-8979
YR 2014
FD 2014-06-07
LK https://hdl.handle.net/20.500.14352/34015
UL https://hdl.handle.net/20.500.14352/34015
LA eng
NO © 2014 AIP Publishing LLC. This work was supported by Spanish MINECO under grants FIS2008-06249 and Consolider CSD2007-00010 and by CAM under grant S2009/MAT-1726.
NO MINECO
NO Comunidad de Madrid
DS Docta Complutense
RD 9 abr 2025