Study of iron oxides obtained by decomposition of an organic precursor
Iron oxide powders were obtained by the isothermal decomposition of ferric citrate in an oxygen atmosphere at different temperatures. Throughout the experiments, the product of decomposition was a mixture of maghemite (ϒ-Fe2O3) and hematite (α-Fe2O3. with different relative proportions and particle...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión enviada para evaluación y publicación |
| Fecha de publicación: | 1999 |
| País: | México |
| Institución: | Centro de Investigación en Materiales Avanzados |
| Repositorio: | Fuente de Objetos Científicos Open Access del CIMAV |
| Idioma: | inglés |
| OAI Identifier: | oai:cimav.repositorioinstitucional.mx:1004/1011 |
| Acceso en línea: | http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1011 |
| Access Level: | acceso abierto |
| Palabra clave: | info:eu-repo/classification/Organic precursor/Iron oxides info:eu-repo/classification/cti/1 info:eu-repo/classification/cti/22 info:eu-repo/classification/cti/2299 info:eu-repo/classification/cti/229999 |
| Sumario: | Iron oxide powders were obtained by the isothermal decomposition of ferric citrate in an oxygen atmosphere at different temperatures. Throughout the experiments, the product of decomposition was a mixture of maghemite (ϒ-Fe2O3) and hematite (α-Fe2O3. with different relative proportions and particle size distributions. After TGA and DTA measurements, a decomposition temperature of 300°C was chosen, and a maximum specific saturation magnetization of about 40 emurg was obtained. Most of the product particles were less than 1 μm in size, including a superparamagnetic fraction, as evidenced by Mössbauer spectroscopy. |
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