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Electronic, Structural, and Magnetic Properties of 57 Fe Atoms Created by 57 Co Electron Capture Decay in CoF 2 and in CoCl 2 − and FeCl 2 − Bispyridine Complexes
Author(s) -
Friedt J. M.,
De Jesus Filho M. F.,
Sanchez J. P.
Publication year - 1980
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/pssb.2221020136
Subject(s) - antiferromagnetism , ionic bonding , chemistry , hyperfine structure , mössbauer spectroscopy , paramagnetism , electron , ligand (biochemistry) , crystallography , atomic physics , ion , condensed matter physics , physics , organic chemistry , quantum mechanics , biochemistry , receptor
A comparative investigation of the 57 Fe absorption and emission spectroscopy data in hosts of CoF 2 , CoCl 2 2py, and FeCl 2 2py is reported in both the paramagnetic and antiferromagnetic phases of these compounds. The electron capture decay products are observed to coexist in the Fe 2+ and Fe 3+ ionic configurations in CoF 2 , while only the Fe 2+ charge state is stabilized inFeCl 2 2py and CoCl 2 2py hosts. Distributions of hyperfine interactions are observed in the complex ligand compounds FeCl 2 2py and CoCl 2 2py, whereas there is no indication for such effects in the monoatomic ligand compound CoF 2 . This indicates unique unperturbed substitutional rest sites in CoF 2 , whereas in the other hosts, part of the decay products are observed in a distribution of defect sites.