Hyperfine Interactions

, Volume 93, Issue 1, pp 1641–1646 | Cite as

A study of a fullyc-axis oriented dc-sputtered thin film of YBa2(Cu0.9857Fe0.02)3O6.8 by means of CEMS, XRD and SEM

  • J. Amon
  • J. Dengler
  • G. Ritter
  • C. Fink
  • J. Markl
  • G. Saemann-Ischenko
Superconductivity
  • 13 Downloads

Abstract

A fullyc-axis oriented thin film of YBa2(Cu0.9857Fe0.02)3O6.8 prepared by planar dcsputtering has been investigated by means of Mössbauer spectroscopy. Room temperature57Fe conversion electron Mössbauer spectra taken at different angles between the γ-ray direction and the normal (=c-axis) of the film show four subspectra: A (quadrupole splitting ΔEQ≈1.9 mm/s), B (ΔEQ≈1 mm/s), C (ΔEQ≈0.5 m/s) and D (ΔEQ≈1.6 mm/s). For subspectra A, B and C, we found the same hyperfine parameters as already published on other samples. The hyperfine parameters for subspectrum D are determined for the first time using a fully oriented sample. For D, we found the asymmetry parameterη ≥0.6 andVzz (the main component of the electric field gradient) lying in the a-b-plane.

Keywords

Spectroscopy Thin Film Field Gradient Quadrupole Splitting Electric Field Gradient 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    J. Dengler, G. Ritter, G. Saemann-Ischenko, B. Roas, L. Schultz, B. Molnár, D.L. Nagy and I.S. Szücs, Hyp. Int. 55(1990)1267.Google Scholar
  2. [2]
    A. Rykov, V. Caignaert, N. Nguyen, A. Maignan, E. Suard and B. Raveau, Physica C205(1993)63.Google Scholar
  3. [3]
    L. Bottyán, B. Molnár, D.L. Nagy, I.S. Szücs, J. Tóth, J. Dengler, G. Ritter and G. Schober, Phys. Rev. B38(1988)11373.Google Scholar
  4. [4]
    M. Leghissa, A. Königer, M. Lippert, W. Dorsch, M. Kraus and G. Saemann-Ischenko, submitted to Z. Phys. B.Google Scholar
  5. [5]
    J.K. Srivastava, S.C. Bhargava, P.K. Iyengar and B.V. Thosar, in:Advances in Mössbauer Spectroscopy (Elsevier, Amsterdam, 1983) p. 19 and p. 39;Google Scholar
  6. [5a]
    E. Giesse, J. Dengler, G. Ritter, W. Wagner, D. Brandl, H. Voit and G. Saemann-Ischenko, Solid State Commun. 86(1993)243.Google Scholar
  7. [6]
    J. Dengler and G. Ritter, these Proceedings, Hyp. Int.Google Scholar
  8. [7]
    R.A. Brand, Ch. Sauer, H. Lütgemeier, P.M. Meuffels and W. Zinn, Hyp. Int. 55(1990)1229.Google Scholar
  9. [8]
    J. Dengler, G. Errmann and G. Ritter, to be published.Google Scholar
  10. [9]
    J.M Bell, Phys. Rev B37(1988)541.Google Scholar
  11. [10]
    G.V.S. Sastry, R. Wördenweber and H.C. Freyhardt, J. Appl. Phys. 65(1989)3975.Google Scholar
  12. [11]
    E. Baggio-Saitovitch, Hyp. Int. 66(1991)231;Google Scholar
  13. [11a]
    S. Schaeidt. J. Bieg and J. Jing, Hyp. Int. 55(1990)1371.Google Scholar
  14. [12]
    H. Yasuoka, T. Shimizu, T. Imai, S. Sasaki, Y. Ueda and K. Kosuge, Hyp. Int. 49(1989)167.Google Scholar

Copyright information

© J.C. Baltzer AG, Science Publishers 1994

Authors and Affiliations

  • J. Amon
    • 1
  • J. Dengler
    • 1
  • G. Ritter
    • 1
  • C. Fink
    • 1
  • J. Markl
    • 1
  • G. Saemann-Ischenko
    • 1
  1. 1.Physikalisches Institut der Universität Erlangen-NürnbergErlangenGermany

Personalised recommendations