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Studies of superconducting A-15 vanadium-based alloys

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Abstract

Superconductivity of binary alloys spanning the A-15 compounds V3Si, V3Ge, V3Ga, and V3Al and the pseudobinary derivatives of these stoichiometric compounds was surveyed by studying samples prepared by rf-sputtering from alloy cathodes. The possible formation of the hypothetical A-15 binaries “V3P,” “V3B,” and “V3C” and their pseudobinary formation with V3Si was also explored. Efforts to form these hypothetical alloys were not successful. The T c's were measured resistively and the structure and lattice constants were determined by x-ray analysis. A maximum T cof 11.7 K was obtained for A-15 V3Al, and the importance of a suitable deposition temperature and high sputtering pressures was examined. It is proposed that large variations of T camong pseudobinary alloys imply a rapid variation of the density of states at the Fermi level.

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Authors and Affiliations

  1. Department of Physics and Astronomy, University of Rochester, Rochester, New York

    L. A. Pendrys & D. H. Douglass

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  1. L. A. Pendrys
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  2. D. H. Douglass
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Pendrys, L.A., Douglass, D.H. Studies of superconducting A-15 vanadium-based alloys. J Low Temp Phys 23, 367–391 (1976). https://doi.org/10.1007/BF00116927

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  • DOI: https://doi.org/10.1007/BF00116927

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