Enhancement of critical current of SiC and malic acid codoped MgB2/Fe wires

W. X. Li, R. H. Chen, X. Xu, Y. M. Hu, M. Y. Zhu, Y. Li, S. X. Dou

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The influences of microstructure, connectivity, and disorder on the critical current density, Jc, are discussed to clarify the different mechanisms of Jc(H) in different magnetic field ranges for in situ and combined in situ/ex situ MgB2∕Fe wires with nano SiC and malic acid codoping. Sintering temperature plays a very important role in the electromagnetic properties at different temperatures and under various magnetic fields. Connectivity, upper critical field, Hc2, and irreversibility field, Hirr, are studied to demonstrate the mechanism of Jc dependence on magnetic field. The combined in situ/ex situ process is proved to be a promising technique for fabrication of practical MgB2 wires.
    Original languageEnglish
    Article number1542032
    Pages (from-to)1542032-1-1542032-5
    Number of pages5
    JournalInternational Journal of Modern Physics B
    Volume29
    Issue number25-26
    DOIs
    Publication statusPublished - 2015

    Keywords

    • connectivity
    • distortion
    • magnetic fields

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