Journal of Low Temperature Physics

, Volume 104, Issue 1–2, pp 49–65 | Cite as

Magnetic properties of highly dilutedPdFex andPtFex-alloys. Part I. Magnetization at kelvin temperatures

  • T. Herrmannsdörfer
  • S. Rehmann
  • W. Wendler
  • F. Pobell


Localized 3 d magnetic moments polarize in palladium and platinum matrices the Pd 4d and Pt 5d conduction electrons in their neighbourhood. This leads to effective “giant magnetic moments” μgm. We have measured the magnetization M(x, B, T) of each ninePdFex andPtFex samples with 2ppm≤x≤260ppm at 1.6K≤T≤300 K and 0 ≤B ≤ 6.0 T. Our main motivation is to determine the size of the giant magnetic moments induced by highly diluted Fe impurities in both transition metals. From the data, taken in a wide polarization range, 9% ≤M/Msat≤93%, we determine the impurity concentrations x, the effective moments μgm, and the spin quantum number J of the samples by fitting to the Brillouin function. ForPdFex, we find a slight increase of μgm with concentration from (13 ± 1.5) μB at x = (2.5 ± 0.5) ppm to (16 ± 1) μB at x = (220 ± 30) ppm. ForPtFex, the moments are almost constant with μgm = (7.8 ± 1) μB at x = 2 to 14 ppm and μgm = (8.6 ± 0.7) μB at x = 75 to 95 ppm. For all samples we obtain a concentration independent very large or possibly infinite spin quantum number, J ≥ 100, which means that the localized giant moments behave as classical ones at T > 1.6 K and Tesla magnetic fields.


Magnetic Field Platinum Magnetic Property Palladium Magnetic Material 
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.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    J. A. Mydosh,Spin Glasses: An Experimental Introduction, Taylor & Francis, London (1994).Google Scholar
  2. 2.
    G. J. Nieuwenhuys,Adv. Phys. 24, 515 (1975).Google Scholar
  3. 3.
    J. A. Mydosh,J. Mag. Mag. Mat. 7, 237 (1978).Google Scholar
  4. 4.
    J. A. Mydosh and G. J. Nieuwenhuys,Dilute Transition Metal Alloys;Spin Glasses, Ch. 2 inFerromagnetic Materials, Vol. 1, E. P. Wohlfahrt, ed., North Holland Publication Comp. (1980).Google Scholar
  5. 5.
    K. Swieca, Y. Kondo, and F. Pobell, to be published (1996).Google Scholar
  6. 6.
    J. Crangle and W. R. Scott,J. Appl. Phys. 36, 921 (1965).Google Scholar
  7. 7.
    R. P. Peters, Ch. Buchal, M. Kubota, R. M. Mueller, and F. Pobell,Phys. Rev. Lett. 53, 1108 (1984).Google Scholar
  8. 8.
    K. Kiymac,Physica Status Solidi B 128, 553 (1985).Google Scholar
  9. 9.
    B. H. Verbeek, G. J. Nieuwenhuys, J. A. Mydosh, C. van Dijk, and B. D. Rainford,Phys. Rev. B 22, 5426 (1980).Google Scholar
  10. 10.
    M. A. Ruderman and C. Kittel,Phys. Rev. 96, 99 (1954).Google Scholar
  11. 11.
    T. Kasuya,Progr. Theor. Phys., Kyoto,16, 45 (1956).Google Scholar
  12. 12.
    K. Yoshida,Phys. Rev. 106, 893 (1957).Google Scholar
  13. 13.
    B. Giovanni, M. Peter, and J. R. Schrieffer,Phys. Rev. Lett. 12, 736 (1964).Google Scholar
  14. 14.
    C. Büscher, T. Auerswald, E. Scheer, A. Schröder, H. von Löhneysen, and H. Claus,Phys. Rev. B 46, 983 (1992).Google Scholar
  15. 15.
    T. Herrmannsdörfer, S. Rehmann, H. Uniewski, and F. Pobell,Physica B 194–196, 319 (1994).Google Scholar
  16. 16.
    Y. Kondo, K. Swieca, and F. Pobell,J. Low Temp. Phys. 100, 195 (1995).Google Scholar
  17. 17.
    T. Herrmannsdörfer, S. Rehmann, and F. Pobell, following paper.Google Scholar
  18. 18.
    Cryogenic Consultant Limited, “S-600” magnetometer.Google Scholar
  19. 19.
    R. P. Giffard, R. A. Webb, and J. C. Wheatley,J. Low Temp. Phys. 6, 533 (1972).Google Scholar
  20. 20.
    O. V. Lounasmaa,Experimental Principles and Methods Below 1 K, Academic Press, New York (1974).Google Scholar
  21. 21.
    J. C. Gallop,SQUIDS, the Josephson Effects and Superconducting Electronics, Adam Hilger, Bristol (1991).Google Scholar
  22. 22.
    Cryo Cal Inc., Ge resistance thermometer Cr 2500H-1.5-100.Google Scholar
  23. 24.
    J. E. van Dam, P. C. M. Gubbens, and G. J. van den Berg,Physica 70, 520 (1973).Google Scholar
  24. 25.
    W. Sänger and J. Voitländer,Z.f. Physik B 38, 133 (1980).Google Scholar
  25. 26.
    An overview on the RPd3 (R = lanthanides) system and related compounds is given in: W. E. Wallace and E. Segal,Rare Earth Intermetallics, Academic Press, New York and London, 197 (1973).Google Scholar
  26. 28.
    Mass spectroscopical measurements on the mentionedPdFex samples were performed at Kernforschungsanlage Jülich, Germany, in 1984; see also Ref. 7.Google Scholar
  27. 29.
    Mass spectroscopical measurements on the mentionedPdFex andPtFex samples were performed at the University of Leipzig, Germany, by Dr. Börmer.Google Scholar
  28. 30.
    O. K. Anderson,Phys. Rev. B 2, 883 (1970).Google Scholar

Copyright information

© Plenum Publishing Corporation 1996

Authors and Affiliations

  • T. Herrmannsdörfer
    • 1
  • S. Rehmann
    • 1
  • W. Wendler
    • 1
  • F. Pobell
    • 1
  1. 1.Physikalisches InstitutUniversität BayreuthBayreuthGermany

Personalised recommendations