Iron sulfide (troilite) inclusion extracted from Sikhote-Alin iron meteorite: Composition, structure and magnetic properties
| Autor: | Zoltán Klencsár, A. K. Shtoltz, Israel Felner, Zoltán Homonnay, Ernő Kuzmann, Vladimir A. Semionkin, Andrey V. Chukin, V. I. Grokhovsky, A.A. Maksimova, E. V. Petrova, Michael I. Oshtrakh |
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| Rok vydání: | 2016 |
| Předmět: |
Chemistry
Analytical chemistry Iron sulfide 010502 geochemistry & geophysics Condensed Matter Physics 01 natural sciences Iron meteorite Troilite Crystallography chemistry.chemical_compound Magnetization Daubréelite 0103 physical sciences Mössbauer spectroscopy General Materials Science 010306 general physics Spectroscopy Electric field gradient 0105 earth and related environmental sciences |
| Zdroj: | Materials Chemistry and Physics. 174:100-111 |
| ISSN: | 0254-0584 |
| DOI: | 10.1016/j.matchemphys.2016.02.056 |
| Popis: | Iron sulfide (troilite) inclusion extracted from Sikhote-Alin IIAB iron meteorite was examined for its composition, structure and magnetic properties by means of several complementary analytical techniques such as: powder X-ray diffractometry, scanning electron microscopy combined with energy-dispersive X-ray spectroscopy, magnetization measurements, ferromagnetic resonance spectroscopy and 57 Fe Mossbauer spectroscopy with a high velocity resolution. The applied techniques consistently indicated the presence of daubreelite (FeCr 2 S 4 ) as a minority phase beside troilite proper (FeS). As revealed by 57 Fe Mossbauer spectroscopy, the Fe atoms in troilite were in different microenvironments associated with either the ideal FeS structure or that of a slightly iron deficient Fe 1– x S. Phase transitions of troilite were detected above room temperature by ferromagnetic resonance spectroscopy. A novel analysis of 295 and 90 K 57 Fe Mossbauer spectra was carried out and the hyperfine parameters associated with the ideal structure of troilite were determined by considering the orientation of the hyperfine magnetic field in the eigensystem of the electric field gradient at the 57 Fe nucleus. |
| Databáze: | OpenAIRE |
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