EFG determination in magnetic field oriented powders of YBa2(Cu1-x57Fex)3O7-y superconductors: A test of existing models

L. Bottyán, J. Dengler, Gy Faigel, N. E. Kaner, D. L. Nagy, G. Ritter, U. Röhlich

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1 Citation (Scopus)


YBa2(Cu1-x57Fex)3O7-y powder samples with x=0.02 and 0.03 were uniaxially c-aligned in epoxy in a magnetic field of 7.5 T. An X-ray map of the distribution of the orientation of the crystallographic c-axes of the individual crystallites was determined.57Fe Mössbauer spectra were recorded at room temperature as a function of the angle between the texture axis and the observation direction. Different sets of EFG parameters were selected from the literature and the fit constraints were equally set for all. Using a model of the measured texture function and accounting for polarization-dependent blackness effects, a simultaneous fit of the Mössbauer spectra results in minimum κ{script}2 for the EFG set determined previously from CEMS data on this films.

Original languageEnglish
Pages (from-to)1647-1651
Number of pages5
JournalHyperfine Interactions
Issue number1
Publication statusPublished - Dec 1 1994

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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