Mössbauer spectra of iron-chromium sulphospinels with varying metal ratio
| Autor: | F.K. Lotgering, J.F. Olijhoek, A. M. van Diepen |
|---|---|
| Rok vydání: | 1975 |
| Předmět: |
Spinel
Analytical chemistry chemistry.chemical_element General Chemistry engineering.material Condensed Matter Physics Spectral line Metal Chromium Paramagnetism Octahedron chemistry visual_art Mössbauer spectroscopy Materials Chemistry engineering visual_art.visual_art_medium Electric field gradient |
| Zdroj: | Solid State Communications. 17:1149-1153 |
| ISSN: | 0038-1098 |
| DOI: | 10.1016/0038-1098(75)90275-6 |
| Popis: | Samples of the sulphospinel FeCr 2 S 4 with varying Fe/Cr ratio around the nominal composition have been investigated with Mossbauer spectroscopy. The spectra with the narrowest lines, as well as a γ-type peak in the specific heat-temperature curve at the low temperature transition previously described, were obtained for an overall composition with a small Fe deficit. The broadening often observed in Mossbauer spectra of FeCr 2 S 4 samples is attributed to Fe 2+ on octahedral sites in the spinel phase, resulting in an electric field gradient at the Fe 2+ ions on the tetrahedral sites. The paramagnetic Mossbauer spectrum of Fe 1.06 Cr 1.94 S 4 is in accordance with this interpretation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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