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Hyperfine Interactions

, Volume 55, Issue 1–4, pp 1199–1203 | Cite as

151Eu mössbauer spectroscopy studies of substituted EuBa2Cu3O7 systems

  • E. R. Bauminger
  • I. Felner
  • Y. Lehavi
  • I. Nowik
Superconductors

Abstract

Mössbauer spectroscopy studies of151 Eu in EuBa2Cu3O7, EuBa2Cu3O6, EuBa2Cu3O6S, EuBaKCu3O7, EuBa2Cu2.5Fe0.5O7, Eu0.5Pr0.5Ba2Cu3O7, Eu1.25Ba1.75Cu3O7 and EuCaBaCu3O7 at several temperatures have been performed. The major conclusions are; All substitutions affect the Eu quadrupole interaction (10–20%). Substitution of 0 by S increases the Eu quadrupole interaction by 15% and increases η from 0.3 to 0.8 which proves that S substitutes oxygen in the immediate neighbourhood of the rare earth ions. In EuCaBaCu3O7 the quadrupole interaction is larger by 80% than in EuBa2Cu3O7, proving that in this structure Eu occupies predominantly the Ba sites.

Keywords

Oxygen Spectroscopy Thin Film Rare Earth Spectroscopy Study 
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.

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References

  1. [1]
    I. Nowik and I. Felner, Hyp. Int. 29 (1986) 959.CrossRefGoogle Scholar
  2. [2]
    G. wortmann, C.T. Simmons and G. Kaindl, Solid State Comm. 64 (1987) 1057.CrossRefGoogle Scholar
  3. [3]
    E.R. Bauminger, A. Diamant, I. Felner, I. Nowik and S. Ofer, Phys. Lett. 50A (1974) 321.ADSGoogle Scholar
  4. [4]
    U. Neukirch, C.T. Simmons, P. Sladeczek, C. Laubschat, O. Strebel, G. Kaindl and D.D. Sarma, Europhys. Lett. 5 (1988) 567.ADSGoogle Scholar
  5. [5]
    A.H. Carim, A.F. de Jong and D.M. de Leeuw, Phys. Rev. B38 (1988) 7009.CrossRefADSGoogle Scholar

Copyright information

© J.C. Baltzer A.G. Scientific Publishing Company 1990

Authors and Affiliations

  • E. R. Bauminger
    • 1
  • I. Felner
    • 1
  • Y. Lehavi
    • 1
  • I. Nowik
    • 1
  1. 1.Racah Institute of PhysicsHebrew UniversityJerusalemIsrael

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