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Isomer Shift of Multiple Charge States of Iron in CaO and CaF 2
Author(s) -
Regnard J. R.,
Pelzl J.
Publication year - 1973
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.2220560127
Subject(s) - mössbauer spectroscopy , chemistry , mössbauer effect , analytical chemistry (journal) , electron , charge (physics) , crystallography , physics , nuclear physics , chromatography , quantum mechanics
The isomer shifts of Fe 2+ and Fe 3 + in CaF 2 and of Fe 2+ , Fe 2+ , and F e3+ in 57 Co‐doped CaO have been measured by the Mössbauer effect. The results are compared with existing data of the isomer shift of multivalent iron in KMgF 3 and MgO. The change of the electron density at the nucleus of the aliovalent iron is related to the covalency of the host lattices. Extrapolating to zero covalency n lower limit of the isomer shift calibration constant of 57 Fe, α = −0.25(3) α 3 0 mm s‐1 , was deduced.