Lightweight, highly tough and durable YBa₂Cu₃O_{7 -x} superconductor.

ABSTRACT: The inherent brittleness and low sustainability of YBa₂Cu₃O_{7 -x} (YBCO) bulk superconductor seriously impede its wide applications. It is a great challenge to achieve toughening of this material and maintain its invariable superconductivity at the same time. Here, we fabricate bulk YBCO composite superconductor with a density of 2.15 g cm^-3, which consists of interlocking dual network construction and shows high toughness and durability. The results show that its unit normalized fracture energy at 77 K reaches 638.6 kN m^-2, which is ∼14.8 times that of YBCO bulk prepared by the top-seeded melt textured growth (TSMTG) method. Its critical current shows no degradation during the toughening process. Moreover, after 10 000 cycles

SUBMITTER: Zhang B 

PROVIDER: S-EPMC10062695 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature