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Comparison of superconducting parameters of A 15- and σ-phases of Nb−Pt

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Abstract

The superconducting properties of A 15- and σ-phases of the system Nb−Pt were investigated. Alloys of compositions Nb3Pt, Nb2Pt, and Nb62Pt38 were prepared by arc melting and subjected to optical microscopic and x-ray analysis for structure determination. The transition temperatures were measured inductively as well as resistively. The temperature dependences of critical fields were measured up to 35 kG. The A 15-phase has aT c value of 8.97K and a zero temperature upper critical fieldH c2(0) of 100 kG as compared to aT c value of 2.14K and anH c2(0) value of 14kG for the σ-phase. A comparison with theoretical upper critical field values seems to indicate that a spin-orbit coupling mechanism is responsible for the higher value ofH c2(0) in the case of the A 15-phase alloy. The temperature dependent resistance up to 300 K is also measured and discussed for both the phases.

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References

  1. Y.A. Rocher, J. Friedel: J. Phys. Chem. Solids21, 287 (1961)

    Article  Google Scholar 

  2. E. Leyarovski, L. Levrrovska, E. Krasnopyorov, L. Kokot, R. Horyn, T. Mydlarz: Z. Physik B27, 57 (1977)

    Article  Google Scholar 

  3. H.R. Khan, K. Lüders, Ch.J. Raub, Z. Szücs: Phys. stat. sol. (b)78, K107 (1976)

    Google Scholar 

  4. H.R. Khan, Ch.J. Raub, K. Lüders, Z. Szücs: Appl. Phys.13, 123 (1977)

    Article  ADS  Google Scholar 

  5. P. Greenfield, P.A. Beck: Trans. Am. Inst. Min. (Metall) Eng.206, 265 (1956)

    Google Scholar 

  6. R.M.Waterstrat, R.C.Manuszewski: NBS IR 73-415, August 1975

  7. R.D. Blaugher, J.K. Hulm: J. Phys. Chem. Solids19, 134 (1961)

    Article  Google Scholar 

  8. E. Bucher, F. Heiniger, J. Muller: Phys. kondens. Materie2, 210 (1964)

    Article  Google Scholar 

  9. B.T. Matthias, V.B. Compton, E. Corenzwit: J. Phys. Chem. Solids19, 130 (1961)

    Article  Google Scholar 

  10. P. Spitzli, R. Flükiger, F. Heiniger, J. Muller: Phys. Letters30A, 170 (1969)

    ADS  Google Scholar 

  11. R. Flükiger, P. Spitzli, F. Heiniger, J. Muller: Phys. Letter29A, 407 (1969)

    Article  ADS  Google Scholar 

  12. A.M. Clogston: Phys. Rev. Lett.9, 266 (1962)

    Article  ADS  Google Scholar 

  13. B.S. Chandrasekhar: Appl. Phys. Lett.1, 7 (1962)

    Article  Google Scholar 

  14. R.R. Hake: Phys. Rev.158, 356 (1967)

    Article  ADS  Google Scholar 

  15. N.R. Werthamer, E. Helfand, P.C. Hohenberg: Phys. Rev.147, 295 (1966)

    Article  ADS  Google Scholar 

  16. K. Maki: Physics1, 21; 127 (1964)

    Google Scholar 

  17. G.H. Bongi, R. Flükiger, A. Treyvaud, Ø. Fischer: J. Low Temp. Phys.23, 543; 571 (1976)

    Google Scholar 

  18. A.H.Wilson:The theory of metals, 2nd ed. (Cambridge University Press 1956)

  19. G.W. Webb, Z. Fisk, J.J. Engelhard, S.D. Bader: Phys. Rev. B15, 2624 (1977)

    Article  ADS  Google Scholar 

  20. H.R.Khan, K.Lüders, Ch.J.Raub, Z.Szücs: To be published in phys. stat. sol.84b

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Authors and Affiliations

  1. Forschungsinstitut für Edelmetalle und Metallchemie, D-7070, Schwäbisch-Gmünd, Germany

    H. R. Khan & Ch. J. Raub

  2. Institut für Atom- und Festkörperphysik, Freie Universität Berlin, D-1000, Berlin 33, Germany

    K. Lüders & Z. Szücs

Authors
  1. H. R. Khan
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  2. Ch. J. Raub
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  3. K. Lüders
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  4. Z. Szücs
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Khan, H.R., Raub, C.J., Lüders, K. et al. Comparison of superconducting parameters of A 15- and σ-phases of Nb−Pt. Appl. Phys. 15, 307–313 (1978). https://doi.org/10.1007/BF00896113

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  • DOI: https://doi.org/10.1007/BF00896113

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