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On the Antiferromagnetism of α‐FeOOH
Author(s) -
Dézsi I.,
Fodor M.
Publication year - 1966
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.19660150124
Subject(s) - antiferromagnetism , relaxation (psychology) , mössbauer spectroscopy , excited state , spin (aerodynamics) , materials science , condensed matter physics , néel temperature , nuclear magnetic resonance , chemistry , crystallography , physics , atomic physics , thermodynamics , magnetization , magnetic field , psychology , social psychology , quantum mechanics
The Mössbauer effect is measured in natural and synthetic α‐FeOOH samples in an attempt to resolve discrepancies between results reported in the literature. The present results indicate that the deviations can be explained by the presence of water in some of the samples. The Néel temperature is found to be (367 ± 2) °K. The measured temperature dependence of the Mössbauer effect suggests that the spin‐relaxation time in α‐FeOOH is of the same order as the lifetime of the 14.4 keV excited level in Fe 57 in synthetic samples.