Moessbauer Investigation of Iron Doped YBa2/Cu3/O(7-delta)

摘要

We have recorded /sup 57/Fe Moessbauer spectra of YBa/sub 2/(Cu/sub 94/Fe/sub 06/)/sub 3/O/sub 7-delta/ uniaxially oriented powder. Additional measurements have been made on YBa/sub 2/(Cu/sub 99/Fe/sub 01/)/sub 3/O/sub 7-delta/ and YBa/sub 2/(Cu/sub 99/Fe/sub 01/)/sub 3/O/sub 6/ powder. The analysis shows that the iron atoms substitute Cu1 (in the oxygen chain) and that the main axis of the electric field gradient (EFG) is in the c-plane. (ERA citation 14:015237)