Towards high-field applications:high-performance,low-cost iron-based superconductors  

作　　者：Chiheng Dong Qingjin Xu Yanwei Ma 

机构地区：[1]Key Laboratory of Applied Superconductivity,Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China [2]Institute of Electrical Engineering and Advanced Electromagnetic Drive Technology,Jinan 250013,China [3]University of Chinese Academy of Sciences,Beijing 100049,China [4]Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

出　　处：《National Science Review》2024年第11期219-238,共20页国家科学评论（英文版）

基　　金：supported by the National Key R&D Program of China(2018YFA0704200);the Strategic Priority Research Program of Chinese Academy of Sciences(XDB25000000);the National Natural Science Foundation of China(52172275,51721005 and 52107031);Beijing Municipal Natural Science Foundation(3222061);the Natural Science Foundation of Shandong Province(ZR2021ME061);the International Partnership Program of Chinese Academy of Sciences(182111KYSB20160014).

摘　　要：High magnetic fields play a crucial role in advancing basic sciences,fusion energy,and magnetic resonance imaging systems.However,the widespread use of high-field magnets requires affordable high-temperature superconducting wires that can carry large supercurrents.Iron-based superconductors offer an economically attractive solution to push forward important yet costly scientific programs,such as nuclear fusion reactors and next-generation particle accelerators.In this review,we start with the fabrication of iron-based superconducting wires and tapes and continue to discuss several key factors governing the current transport properties.State-of-the-art wires and tapes are introduced with emphasis on grain boundary characteristics,flux pinning,and anisotropy.The architecture of flexible conductors enables low cost,high mechanical strength,and high thermal stability.Recent progress in practical applications,including superconducting joints and insert coils,is also reviewed.Finally,we propose several key questions faced by iron-based superconductors in future practical applications.

关 键 词：iron-based superconductors superconducting wires critical current density flux pinning superconducting joints high-field magnets 

分 类 号：TB383.1[一般工业技术—材料科学与工程] O469[理学—凝聚态物理]