FLEXIBLE HIGH-TEMPERATURE SUPERCONDUCTOR AND METHOD FOR ITS PRODUCTION

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FIELD : electrical engineering. SUBSTANCE : invention relates to the field of electrical engineering, namely to a technology for manufacturing flexible high-temperature superconductors (HTSC) with a high critical current density in an external magnetic field and a method for obtaining these superconductors (tapes). The invention can be used for the industrial production of HTSC wires with a very high critical current density in magnetic fields above 1 T at temperatures below 50 Kelvin, in particular for use in compact fusion reactors. A flexible high-temperature superconductor contains a substrate and a superconducting layer with the gross formula RE1+2xBa2Cu3O7+3x, which includes a superconducting matrix of the composition REBa2Cu3O7 and non-superconducting nanoparticles of the composition RE2O3, where x=0.05-0.15, RE is a rare earth element selected from the group, including Y, Dy, Ho, Er, Tm, Yb and Lu, while the density of the mentioned nanoparticles is not less than 1016 nanoparticles/cm3. EFFECT : improving the characteristics of a flexible high-temperature superconductor by increasing the critical current in high magnetic fields, as well as simple and cost-effective industrial large-scale production of these HTSC wires. 15 cl, 8 dwg, 1 ex, 2 tbl