Effect of thermal strain on Jc and Tc in high density nano-SiC doped MgB2

W. X. Li, R. Zeng, L. Lu, S. X. Dou

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    14 Citations (Scopus)

    Abstract

    The influences of lattice strain on the superconducting critical current density Jc and critical transition temperature Tc in pure MgB2 and a SiC-MgB2 composite made by the diffusion process are explored, based on the thermal expansion coefficients and the low temperature effects on Raman scattering. The strong thermal strain provides a strong flux pinning force for the supercurrents at the interfaces between SiC and MgB2. The high Tc of SiC-MgB2 is also discussed according to the expanded lattice and Raman characteristics.
    Original languageEnglish
    Pages (from-to)07E108-1-078108-3
    Number of pages3
    JournalJournal of Applied Physics
    Volume109
    Issue number7
    DOIs
    Publication statusPublished - 2011

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