SUPERCONDUCTING NANOSTRUCTURED MAGNESIUM DIBORIDE

Like conventional superconductors, MgB2 is a phonon-mediated superconductor with a relatively long coherence length. Its properties make the prospects for fabricating reproducible uniform Josephson junctions, the fundamental element of superconducting circuits, much more favorable for MgB2 than for...

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Published inJournal of Optoelectronics and Advanced Materials Vol. 7; no. 1; pp. 423 - 426
Main Authors Kalaydjiev, K, Lovthinov, V, Dimitrov, D, Kirov, M, Baychev, M, Popov, Chr, Radeva, D D, Marinov, M, Tumbalev, V, Radev, I, Vanderbemden, Ph
Format Journal Article
LanguageEnglish
Published 01.02.2005
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Summary:Like conventional superconductors, MgB2 is a phonon-mediated superconductor with a relatively long coherence length. Its properties make the prospects for fabricating reproducible uniform Josephson junctions, the fundamental element of superconducting circuits, much more favorable for MgB2 than for high-temperature superconductors. Here, we report bulk superconductivity in nanophase MgB2, using a two-step technique of mechanically activated self-propagated high-temperature synthesis (MASHS). The conditions of synthesis and some properties of the product (structure, susceptibility, resistivity) were studied. It was shown that a single-phase product was obtained after 2 hours of intense mechanical treatment of reagents (Mg and B powders), and MASHS induced at 30 A.crri2.
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ISSN:1454-4164