Vortex Pinning in Ferromagnet/Superconductor Bilayers - the Dependence on the Ferromagnetic Layer and Temperature
Z. Adamus, M.Z. Cieplak, A. Abal'oshev, M. Berkowski
Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
M. Kończykowski
Laboratoire des Solides Irradies, CEA/DSM/DRECAM and CNRS-UMR 7642,École Polytechnique, 91128 Palaiseau Cedex, France
X.M. Cheng, L.Y. Shu and C.L. Chien
Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, Md 21218, USA
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Received: 25 09 2005;
The behavior of vortex pinning induced by the magnetic domain reversal is studied in the ferromagnet/superconductor bilayers in which superconducting film is niobium and the ferromagnetic layers are the Co/Pt superlattices with perpendicular magnetic anisotropy. The local magnetic field across narrow ferromagnet/superconductor bilayer stripe is measured using a line of miniature Hall sensors. The pinning is studied for samples with different amount of repeats of Co/Pt superlattice, and as a function of temperature.
DOI: 10.12693/APhysPolA.109.451
PACS numbers: 74.25.Ha, 74.25.Qt, 74.78.Db, 74.78.Fk