Abstract
The heterogeneous ferromagnetic–superconducting layered heterostructures V/Fe0.7V0.3/V/Fe0.7V0.3/Nb and Nb/Ni0.65(0.81)Cu0.35(0.19), which contain magnetic clusters and ferromagnetic domains, are studied. The magnetic and superconducting properties of the structures depend on the magnetic-layer thickness, the magnetic field, and the time elapsed from structure preparation. We detected the interaction of clusters with a domain structure, diamagnetism and magnetization reversal of the magnetic layer during the superconducting transition in a ferromagnetic–superconducting heterostructure, and a superconducting transition in the magnetic layer. The magnetic and resistive properties of the heterostructures changed in several weeks and months.
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ACKNOWLEDGMENTS
We thank V.L. Aksenov and L.Ya Vinnikov for their help in the investigations and helpful discussions and M.V. Avdeeva and A.V. Tomchuk for the useful discussions of the small-angle synchrotron radiation scattering data.
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Zhaketov, V.D., Nikitenko, Y.V., Khaidukov, Y.N. et al. Magnetic and Superconducting Properties of the Heterogeneous Layered Structures V/Fe0.7V0.3/V/Fe0.7V0.3/Nb and Nb/Ni0.65(0.81)Cu0.35(0.19). J. Exp. Theor. Phys. 129, 258–276 (2019). https://doi.org/10.1134/S1063776119070136
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DOI: https://doi.org/10.1134/S1063776119070136