Abstract
Composites simulating a network of weak metallic links and consisting of a classic 1–2–3 HTSC and a BaPbO3 metal oxide with incorporated Sn, Ni, and Fe impurities have been prepared. Experimental resistivity, magnetic, and Mössbauer studies of the BaPb0.9Met0.1O3 nonsuperconducting components are presented. The transport properties of the HTSC + BaPb0.9Met0.1O3 composites have been investigated. The superconducting properties of the composites are observed to be suppressed, both when the carrier mean free path in nonsuperconducting components with tin impurities decreases, and as a result of an additional interaction of the magnetic moments of (Fe, Ni) impurities with the spins of supercurrent carriers. The experimental temperature dependences of the composite critical current are analyzed in terms of the de Gennes theory for the superconductor-normal metal-superconductor structures.
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Translated from Fizika Tverdogo Tela, Vol. 42, No. 5, 2000, pp. 791–796.
Original Russian Text Copyright © 2000 by Petrov, Balaev, Ospishchev, Aleksandrov.
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Petrov, M.I., Balaev, D.A., Ospishchev, S.V. et al. Transport properties of HTSC + Ba(Pb, Met)O3 composites as functions of the electrical and magnetic characteristics of nonsuperconducting components. Phys. Solid State 42, 810–815 (2000). https://doi.org/10.1134/1.1131294
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DOI: https://doi.org/10.1134/1.1131294