X-ray and Mössbauer study of rapidly solidified Ce20Fe80 ribbons; effect of the quenching rate
| Autor: | G. Roulin, J. Teillet, P. Ochin, B. Labulle, A. Fnidiki |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Diffraction
Nuclear and High Energy Physics Materials science Analytical chemistry Atmospheric temperature range Condensed Matter Physics Casting Atomic and Molecular Physics and Optics Crystallography Phase (matter) Ribbon Mössbauer spectroscopy Physical and Theoretical Chemistry Hyperfine structure Mossbauer spectrometry |
| Zdroj: | Hyperfine Interactions. 88:65-71 |
| ISSN: | 1572-9540 |
| DOI: | 10.1007/bf02068703 |
| Popis: | Ce20Fe80 ribbons have been produced by planar flow casting under an He atmosphere at linear wheel velocities between 19 and 29 m s−1. Analysis of ribbons by X-ray diffraction and57Fe Mossbauer spectrometry in the temperature range 77–300 K shows that the ribbons are crystallized. For higher velocities, the ribbon is constituted of the two equilibrium phases CeFe2 and Ce2Fe17, but, for lower velocities, there appears a third iron metallic phase, which can be explained by the quenching rate of the melt. A coherent hyperfine parameter set was deduced from fitting Mossbauer spectra in the whole temperature range. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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