Journal of Superconductivity

, Volume 1, Issue 2, pp 219–230 | Cite as

Mossbauer study of the effect of oxygen stoichiometry on the highT c superconductor Y1Ba2(Cu0.97Fe0.03)3O7−x

  • L. J. Swartzendruber
  • L. H. Bennett
  • M. Z. Harford
  • Mark Rubinstein


The Mossbauer effect of oxygen-depleted YBa2Cu3O7-x and PrBa2Cu3O7-x doped with 3%57Fe has been investigated at room temperature. A manifold of quadrupole-split spectra has been found, whose parameters are in general agreement with those found by other workers. In addition, the Mossbauer spectra show that a fraction of the Fe sites develop magnetic order at room temperature when the oxygen content is reduced. It is demonstrated that the observed asymmetries in the Mossbauer spectra can be the result of a preferential alignment of the platelike crystallites that arises during the normal sample preparation process. The tendency to bond with the oxygen atoms is presumed to be responsible for the discreteness of the Mossbauer spectra as a function of oxygen depletion.

Key words

Y1Ba2(Cu0.97Fe0.03)3O7-x superconductor Mossbauer effect oxygen Stoichiometry 


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Copyright information

© Plenum Publishing Corporation 1988

Authors and Affiliations

  • L. J. Swartzendruber
    • 1
  • L. H. Bennett
    • 1
  • M. Z. Harford
    • 2
  • Mark Rubinstein
    • 2
  1. 1.National Bureau of StandardsGaithersburg
  2. 2.Naval Research LaboratoryWashington, DC

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