Тип публикации: статья из журнала
Год издания: 2015
Идентификатор DOI: 10.1063/1.4926549
Ключевые слова: Additives, Flux pinning, Nanoparticles, Sintering, Granular composites, High critical current densities, Nano powders, Nanodispersed, Peak effects, Self assembled structures, Strong magnetic fields, Vortex pinning, Nanomagnetics
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. VeПоказать полностьюry 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. %. (c) 2015 AIP Publishing LLC.
Журнал: JOURNAL OF APPLIED PHYSICS
Выпуск журнала: Vol. 118, Is. 2
ISSN журнала: 00218979
Место издания: MELVILLE
Издатель: AMER INST PHYSICS