In this work, a high-Tc (~117 K) joined with a high-Jc (>104 A/cm2, 100 K) are reported in the CuBa2Ca3Cu4O10+δ (Cu-1234) superconductor. Studies have shown that the ordering vacancies and platelike 90° micro-domains serve as efficient microstructure pinning centers which suppress the vortex flux flow and enhance Jc. And plenty of holes with 2pz symmetry owing to unique compressed [CuO6] octahedrons decrease superconducting anisotropy and enhance the interlayer coupling that guarantee a high-Jc.
- Xuefeng Zhang
- Jianfa Zhao
- Jing Zhu
