高载流铁基超导线材制备成功

Core Insights - Researchers at the Chinese Academy of Sciences have developed a new technology for producing iron-based superconducting wires, achieving record-breaking current-carrying performance [1][2] - Iron-based superconductors exhibit strong magnetic field tolerance, high stability, and low production costs, making them suitable for applications in high-energy particle accelerators, controlled nuclear fusion devices, and high-field magnetic resonance imaging systems [1] Summary by Sections Research Breakthrough - The new iron-based superconducting wire demonstrates significant improvements in critical current density, surpassing previous records in moderate magnetic fields and achieving several times the performance in extremely strong magnetic fields [2] - The research addresses the technical challenge of introducing high-density dislocation defects in brittle non-metallic superconductors, proposing a new method for dislocation construction that can be applied to various rigid materials [2] Technical Innovation - The research team introduced an "asymmetric stress field" control strategy, utilizing large-scale extrusion forming technology to induce high-density, ordered dislocation structures within the brittle superconducting lattice, enhancing the material's current-carrying capacity in strong magnetic fields [1]