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The physical and structural properties of superconducting A15-type Nb-Sn alloys

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Abstract

Bulk samples covering the entire homogeneity range of the Nb-Sn A15-phase were prepared by a new method: levitation melting under high argon pressure. The variations of the lattice parameter, superconducting transition temperature, resistivity and critical field slope were measured as a function of composition. A low-temperature X-ray diffraction study was undertaken in order to fix the compositional limit of the tetragonal phase. The theoretical expectations for the critical field slopes at the transition temperature, T c, based on actually-observed alloy parameters, were found to be in good agreeement with measured values.

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Authors and Affiliations

  1. Département de Physique de la Matière Condensée, Université de Genève, 1211, Genève 4, Switzerland

    H. Devantay, J. L. Jorda, M. Decroux & J. Muller

  2. Kernforschungszentrum Karlsruhe, Institüt für Technische Physik, Postfach 3640, 7500, Karlsruhe, West Germany

    R. Flükiger

Authors
  1. H. Devantay
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  2. J. L. Jorda
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  3. M. Decroux
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  4. J. Muller
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  5. R. Flükiger
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Devantay, H., Jorda, J.L., Decroux, M. et al. The physical and structural properties of superconducting A15-type Nb-Sn alloys. J Mater Sci 16, 2145–2153 (1981). https://doi.org/10.1007/BF00542375

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  • DOI: https://doi.org/10.1007/BF00542375

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