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Investigations of the Quadrupole Interactions in the CuO Cation Sites by Means of the 57 Fe 3+ and 57m Fe 3+ Mössbauer Probes
Author(s) -
Nasredinov F. S.,
Masterov V. F.,
Seregin N. P.
Publication year - 1999
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/(sici)1521-3951(199907)214:1<97::aid-pssb97>3.0.co;2-e
Subject(s) - electric field gradient , mössbauer spectroscopy , quadrupole , quadrupole splitting , ion , lattice (music) , mössbauer effect , spectroscopy , chemistry , absorption spectroscopy , atomic physics , electric field , materials science , condensed matter physics , crystallography , physics , optics , quantum mechanics , acoustics , organic chemistry
Both the isolated 57m Fe 3+ centers in the cation sites and the associations of 57 Fe 3+ with cation vacancies have been found in CuO by means of emission and absorption Mössbauer spectroscopy. A satisfactory agreement of calculated and measured values of the quadrupole splitting was obtained for the isolated 57m Fe 3+ centers if the electric field gradient (EFG) at the 57m Fe nuclei had been assumed to arise from the lattice ions only. For the associates, the EFG calculations proved to be incorrect under the above assumption because of uncontrolled EFG sources.