The role of MgO content in ex situ MgB2 wires

P. Kovac, I. Hugek, T. Meligek, Jean-Claude Grivel, W. Pachla, V. Strbik, R. Diduszko, J. Homeyer, N.H. Andersen

    Research output: Contribution to journalJournal articleResearchpeer-review


    An experimental study of the effect of MgO content in the MgB2 powder used for ex situ made composite wires was carried out. Two single-core MgB2/Fe/Cu wires were made using commercial MgB2 powders from Alfa Aesar containing different fraction of MgO. Critical temperature and critical currents of as-deformed and heat-treated wires were measured. The differences between the wires are discussed and correlated with the MgO content. It was found that by increasing the amount of MgO, the inter-grain connectivity worsens, but well distributed and low size MgO particles improve flux pinning.
    Original languageEnglish
    JournalSuperconductor Science & Technology
    Issue number10
    Pages (from-to)L41-L46
    Publication statusPublished - 2004


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