Control of nanostructure and pinning properties in solution deposited YBa₂Cu₃O_7-x nanocomposites with preformed perovskite nanoparticles.

ABSTRACT: Solution deposited YBa₂Cu₃O_7-x (YBCO) nanocomposites with preformed nanoparticles represent a promising cost-effective approach for superior critical current properties under applied magnetic fields. Nonetheless, the majority of YBCO nanocomposites with high nanoparticle loads (>20%) suffer from nanoparticle coalescence and degraded superconducting properties. Here, we study the influence of nanoparticle concentration (0-25% mol), size (5 nm-10 nm) and composition (BaHfO₃, BaZrO₃) on the generation of structural defects in the epitaxial YBCO matrix, key parameter for vortex pinning. We demonstrate that flash-heated superconducting nanocomposites with 20 mol% preformed BaHfO₃ or BaZrO₃ perovskite secondary phases f

SUBMITTER: Li Z 

PROVIDER: S-EPMC6456625 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature