Zhaketov, V.D.; Nikitenko, Yu.V.; Radu, F.; Petrenko, A.V.; Csik, A.; Borisov, M.M.; Mukhamedzhanov, E.Kh.; Aksenov, V.L.: Magnetism in structures with ferromagnetic and superconducting layers. Journal of Experimental and Theoretical Physics 124 (2017), p. 114-130
10.1134/S1063776116130227
Abstract:
The influence of superconductivity on ferromagnetism in the layered Ta/V/Fe1–xVx/V/Fe1–xVx/Nb/Si structures consisting of ferromagnetic and superconducting layers is studied using polarized neutron reflection and scattering. It is experimentally shown that magnetic structures with linear sizes from 5 nm to 30 μm are formed in these layered structures at low temperatures. The magnetization of the magnetic structures is suppressed by superconductivity at temperatures below the superconducting transition temperatures in the V and Nb layers. The magnetic states of the structures are shown to undergo relaxation over a wide magnetic-field range, which is caused by changes in the states of clusters, domains, and Abrikosov vortices.