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

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外文摘要：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.

外文关键词：

iron-based superconductorssuperconducting wirescritical current densityflux pinningsuperconducting jointshigh-field magnets

作者：

Chiheng Dong、Qingjin Xu、Yanwei Ma

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作者单位：

Key Laboratory of Applied Superconductivity,Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China

Institute of Electrical Engineering and Advanced Electromagnetic Drive Technology,Jinan 250013,China

University of Chinese Academy of Sciences,Beijing 100049,China

Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

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出版年：

2024

DOI：

10.1093/nsr/nwae122

国家科学评论(英文版)

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ISSN：

年,卷(期)：2024.11(11)