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Enhancing of magnetic flux pinning in YBa2Cu3O7-x/CuO granular composites / A. V. Ushakov [et al.] // J. Appl. Phys. - 2015. - Vol. 118, Is. 2. - Ст. 023907, DOI 10.1063/1.4926549. - Cited References: 27. - This work was supported in part by the Ministry of Education and Science of the Russian Federation (Project No. 11.370.2014/K). . - ISSN 0021-8979

РУБ Physics, Applied
Рубрики:
HIGH-TEMPERATURE SUPERCONDUCTORS
   T-C SUPERCONDUCTORS
   CRITICAL CURRENTS
   GRAIN-BOUNDARIES
   CRYSTALS
   DEFECTS
Аннотация: This paper shows that the combination of self-assembled structures in the form of "whiskers" and nanoparticles, which appear as a result of the joint sintering powders YBa2Cu3O7-x and arc nanopowders CuO, leads to a significant increase in the current density and the appearance of the peak effect in strong magnetic fields range. Very high critical current density appears from a complex vortex pinning, where the defects in the form of "whiskers" provides more energy of pinning, and nanoparticles inhibit the flux creep. Regulation of the morphology of such structures can be achieved by simple change of the concentration of nanodispersed additives. It is shown that the optimal additive is CuO equal to 20 wt. %. © 2015 AIP Publishing LLC.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, Russian Federation
Reshetnev Siberian State Aerospace University, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Ushakov, A. V.; Karpov, I. V.; Lepeshev, A. A.; Лепешев, Анатолий Александрович; Petrov, M. I.; Петров, Михаил Иванович; Ministry of Education and Science of the Russian Federation [11.370.2014/K]
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