Touching the properties of NbTi by carbon doped tapes with mechanically alloyed MgB2

Combining mechanical alloying and powder-in-tube processing is a promising way to obtain tapes with excellent properties. Taking advantage of the properties of nanocrystalline precursor powders, it was possible to obtain Jc values of 104A∕cm2 at 12.1T and 4.2K. Evidential substitution of carbon into...

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Veröffentlicht in:Applied physics letters 2007-08, Vol.91 (8)
Hauptverfasser: Herrmann, Marko, Haessler, Wolfgang, Rodig, Christian, Gruner, Wolfgang, Holzapfel, Bernhard, Schultz, Ludwig
Format: Artikel
Sprache:eng
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Zusammenfassung:Combining mechanical alloying and powder-in-tube processing is a promising way to obtain tapes with excellent properties. Taking advantage of the properties of nanocrystalline precursor powders, it was possible to obtain Jc values of 104A∕cm2 at 12.1T and 4.2K. Evidential substitution of carbon into the MgB2 changed the electron scattering and therefore raised the Bc2 up to 12T at 10K. Systematic investigation on the influence of the heat treatment showed that, although an interfering Fe2B reaction layer was formed, an excellent Jc of 104A∕cm2 at 14.3T and 4.2K was achieved.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2773942