Mössbauer spectra of wustite at high temperatures: Diffusion line broadening

In this work, Mössbauer spectra of wustite are studied in the temperature interval 600–910°C. Owing to self-diffusion of iron atoms in the defect wustite lattice, a pronounced broadening of the spectrum is observed. The values of the energy of activation and of the preexponential factor computed fro...

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Bibliographic Details
Published in:Journal of solid state chemistry 1970, Vol.1 (2), p.215-217
Main Authors: Valov, P.M., Vasil'ev, Ya.V., Veriovkin, G.V., Kaplin, D.F.
Format: Article
Language:English
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Summary:In this work, Mössbauer spectra of wustite are studied in the temperature interval 600–910°C. Owing to self-diffusion of iron atoms in the defect wustite lattice, a pronounced broadening of the spectrum is observed. The values of the energy of activation and of the preexponential factor computed from the Mössbauer spectra amount respectively to 25 ± 3 kcal/g-atom and 0.6 × 10 −4 cm 2/sec. The error for log D 0 equals ±0.8. These magnitudes are in satisfactory agreement with the values found by isotopic methods.
ISSN:0022-4596
1095-726X
DOI:10.1016/0022-4596(70)90017-4