Hydrothermal synthesis and structural characterization of some substituted magnetites
| Autor: | D. Mihǎilǎ-Tǎrǎbǎşanu, Valentin S. Teodorescu, N. Popescu-Pogrion, Lucian Diamandescu |
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| Rok vydání: | 1998 |
| Předmět: |
Materials science
Mössbauer effect Mechanical Engineering Inorganic chemistry Condensed Matter Physics Hydrothermal circulation chemistry.chemical_compound Crystallography chemistry Mechanics of Materials Mössbauer spectroscopy Hydroxide Hydrothermal synthesis General Materials Science Crystallite Magnetite Solid solution |
| Zdroj: | Materials Letters. 37:340-348 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/s0167-577x(98)00117-7 |
| Popis: | A hydrothermal method has been used to obtain polycrystalline substituted magnetites, Fe 3− x M x O 4 , ( M =Cr, Mn, Co, Ni, Cu; 0≤ x ≤0.375) starting with ferrous-M hydroxide mixtures at temperatures up to 300°C. Well-defined magnetite crystallites, 0.2–0.3 μm in size have been obtained. The appearance of the intermediate phase α-FeOOH during hydrothermal transformation into magnetite has been evidenced and discussed. By means of 57 Fe Mossbauer spectroscopy, the distribution of different incorporated cations in the magnetite lattice has been analysed. |
| Databáze: | OpenAIRE |
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