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Electronic Properties and Relaxation Processes of Fe 2+ in Iron Bisacetylacetonate Dihydrate from Mössbauer Spectroscopy
Author(s) -
Mathieu J. P.,
Chappert J.
Publication year - 1976
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.2220750116
Subject(s) - mössbauer spectroscopy , magnetic relaxation , ion , relaxation (psychology) , spectral line , materials science , spectroscopy , chemistry , ground state , condensed matter physics , spin (aerodynamics) , analytical chemistry (journal) , magnetic field , nuclear magnetic resonance , crystallography , atomic physics , magnetization , physics , thermodynamics , psychology , social psychology , quantum mechanics , organic chemistry , astronomy , chromatography
57 Fe Mössbauer spectra of Fe(acetylacetonate) 2 · 2 H 2 O have been measured between 300 and 4.2 K and in external magnetic fields up to 60 kOe. Strong texture effects due to the shape of the microcrystals are observed. An analysis of the spectra shows that the Fe 2+ ion is in a high‐spin state. Under the action of spin‐orbit coupling and external magnetic fields the ground state of the Fe 2+ ion is a spin‐doublet somewhat split by about 1 cm −1 . A magnetically induced reduction of the relaxation rate is observed.