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Mössbauer study of the temperature dependence of electron delocalization in mixed valence freudenbergite
Author(s) -
Cashion John D.,
Vance Eric R.,
Ryan Dominic H.
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17190
Subject(s) - ferrous , mössbauer spectroscopy , delocalized electron , valence (chemistry) , ferric , ion , electron , electron delocalization , chemistry , valence electron , spectroscopy , materials science , analytical chemistry (journal) , crystallography , inorganic chemistry , metallurgy , physics , organic chemistry , quantum mechanics , chromatography
The evolution of the electron delocalization in the ferrous subspectra in a sample of mixed valence ferrous‐ferric freudenbergite has been followed by Mössbauer spectroscopy from 6 K to 650 K. The spectral changes do not involve the ferric component, leading to the conclusion that it is due to a thermally driven delocalization of the sixth d‐electron on the ferrous ions. The phenomenon does not occur in samples of pure ferrous freudenbergite.

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