Structure and magnetic properties of magnetite/silicon dioxide nanocomposites
A technique has been developed for synthesis of magnetic nanocomposites based on a magnetite coated with silicon dioxide, using tetramethoxysilane as a precursor. Density, structure, and magnetic properties of the nanocomposites were determined. The SiO2 surface layer weight fraction of nanocomposit...
Збережено в:
| Дата: | 2008 |
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| Автори: | , , , , , |
| Формат: | Стаття |
| Мова: | Російська |
| Опубліковано: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2008
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| Онлайн доступ: | https://surfacezbir.com.ua/index.php/surface/article/view/294 |
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| Назва журналу: | Surface |
| Завантажити файл: |  |
Репозитарії
Surface| Резюме: | A technique has been developed for synthesis of magnetic nanocomposites based on a magnetite coated with silicon dioxide, using tetramethoxysilane as a precursor. Density, structure, and magnetic properties of the nanocomposites were determined. The SiO2 surface layer weight fraction of nanocomposites increase from 0 to 0.5 g per 1 g magnetite has been found to result in drop in density from 4654.8 kg/m3 (for magnetite) to 2207.8 kg/m3, as well as and specific magnetization at saturation and non-monotonous change in the coercive force. |
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