Abstract
Mossbauer emission spectroscopy on the 67Cu(67Zn) isotope has been used to determine the parameters of the electric-field gradient tensor at the copper sites of the HgBa2Ca n−1CunO2n+2 lattices (n=1,2), as well as to calculate these parameters in the point-charge approximation. An analysis of the results, combined with available NQR literature data for the 63Cu isotope, has shown that the best fit of calculated to experimental data can be reached by assuming that the holes due to the presence of defects in the material localize primarily in the sublattice of the oxygen lying in the copper plane.
Published Version
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