Advertisement

Zeitschrift für Physik B Condensed Matter

, Volume 38, Issue 1, pp 77–81 | Cite as

Enhanced superconductivity in zirconium after H(D) implantation

  • B. Stritzker
  • J. D. Meyer
Article

Abstract

Zirconium foils (superconducting transition atT c =0.7 K) were implanted at liquid helium temperatures with hydrogen, deuterium and helium. In all cases a remarkable increase ofT c was observed. Implantation of the inert He atoms leads only to the introduction of lattice defects, which is known to increaseT c of Zr. However, the implanted H and D atoms exert an additional influence on the superconducting behavior based on a change of the electronic properties and an increase of the electron-phonon coupling. Introduction of lattice defects seems to account for theT c increase to 1.49 K after He implantation, whereasT c is even more enhanced by implantation of the hydrogen isotopes. The maximum values forT c are 3.14 K for H and 4.65 K for D implantation. The concentration necessary to produce a saturation inT c for both isotopes is H(D)/Zr≈0.13. The remarkably highT c for the heavier isotope corresponds to an extreme inverse isotope effect. A smaller inverse isotope effect was found earlier in the Pd −H(D) system, where it could be explained by anharmonic effects.

Keywords

Hydrogen Neural Network Zirconium Helium Deuterium 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    For review on superconductivity in metal hydrides see: B. Stritzker and H. Wühl in Topics in Applied Physics, Vol. 29, page 243, Hydrogen in Metals II, Springer-Verlag, 1978, Alefeld, G., Völkl, J. Ceds and references thereinGoogle Scholar
  2. 2.
    Eichler, A., Gey, W.: Z. Physik251, 321 (1972)Google Scholar
  3. 3.
    Compare Roberts, B.W.: J. Phys. and Chem. Ref. Data5, 581 (1976) and references thereinGoogle Scholar
  4. 4.
    Collver, M.M., Hammond, R.H.: Phys. Rev. Lett.30, 92 (1973)Google Scholar
  5. 5.
    Meyer, O., in: Applications of Ion Beams to Materials 1975, Conf. Ser. 28, page 168, The Institute of Physics, Carter, G., Collignon, J.S., Grant, W.A. (eds.)Google Scholar
  6. 6.
    Schmidt, P.H.: J. Vac. Sci. Technol.10, 611 (1973)Google Scholar
  7. 7.
    Matthias, B.T., Geballe, T.H., Compton, V.B.: Rev. Mod. Phys.35, 1 (1963)Google Scholar
  8. 8.
    Paetz, P., Lücke, L.: Metall.62, 657 (1971)Google Scholar
  9. 9.
    For review see, Heim, G., Stritzker, B.: Appl. Phys.7, 239 (1975)Google Scholar
  10. 10.
    Stritzker, B.: Z. Physik268, 261 (1974)Google Scholar
  11. 11.
    Lamoise, A.M., Chaumont, J., Meunier, F., Bernas, H.: J. Physique Lett.36, L-271 (1975)Google Scholar
  12. 12.
    Satterthwaite, C.B., Toepke, I.L.: Phys. Lett.25, 741 (1970)Google Scholar
  13. 13.
    Ziegler, J.F., in: Stopping Powers and Ranges in All Elements. Vol. 2–4. Oxford, London, New York: Pergamon Press 1977Google Scholar
  14. 14.
    Narang, P.P., Paul, G.L., Taylor, K.N.R.: J. Less-Comm. Metals56, 125 (1977)Google Scholar
  15. 15.
    Stritzker, B., Buckel, W.: Z. Physik257, 1 (1972)Google Scholar
  16. 16.
    Gladstone, G., Jensen, M.A., Schrieffer, J.R., in: Superconductivity, Vol. 2, Parks, R.D., (ed.). New York: Marcel Dekker 1969Google Scholar
  17. 17.
    Standley, R.W., Steinback, M., Satterthwaite, C.B.: Solid State Commun.31, 801 (1979)Google Scholar
  18. 18.
    Eichler, A., Wühl, H., Stritzker, B.: Solid State Commun.17, 213 (1975)Google Scholar
  19. 19.
    Rainer, D., Culletto, F.J.: Phys. Rev. B19, 2540 (1979)Google Scholar
  20. 20.
    Ganguly, B.N.: Z. Physik265, 433 (1973) and Phys. Rev. B14, 3848 (1976)Google Scholar
  21. 21.
    Papaconstantopoulos, D.A., Klein, B.M.: Phys. Rev. Lett.35, 110 (1975)Google Scholar
  22. 22.
    Papaconstantopoulos, D.A., Klein, B.M., Economou, E.N., Boyer, L.L.: Phys. Rev. B17, 141 (1978)Google Scholar
  23. 23.
    Shirber, J.E., Morosin, B.: Phys. Rev. B12, 117 (1975)Google Scholar
  24. 24.
    Dumoulin, L., Nédellec, P., Arzoumanian, C., Burger, J.P.: Phys. Stat. Sol. (b)90, 207 (1978)Google Scholar
  25. 25.
    Rahman, A., Sköld, K., Pelizzari, C., Sinha, S.K.: Phys. Rev. B14, 3630 (1976)Google Scholar
  26. 26.
    For a review on electronic structure of metal hydrides see: A.C. Switendick in Topics in Applied Physics, Vol. 28, page 101, Hydrogen in Metals I, Springer-Verlag 1978, Alefeld, G., Volkl, J., Switendick, A.C., (eds.) private communicationGoogle Scholar
  27. 27.
    Eastman, D.E.: Solid State Commun.10, 933 (1972)Google Scholar
  28. 28.
    Jepsen, O., Andersen, O.K., Mackintosh, A.R.: Phys. Rev. B12, 3084 (1975)Google Scholar
  29. 29.
    Bickel, P.W., Berlincourt, T.G.: Phys. Rev.119, 1603 (1960)Google Scholar

Copyright information

© Springer-Verlag 1980

Authors and Affiliations

  • B. Stritzker
    • 1
  • J. D. Meyer
    • 1
  1. 1.Institut für FestkörperforschungKernforschungsanlage JülichJülich 1W. Germany

Personalised recommendations