Magnetic properties of ultrasmall iron oxide nanoclusters in a polymer matrix
| Autor: | V. K. Imshennik, V. V. Matveev, Yu. V. Maksimov, Alexander B. Zezin, V. B. Rogozeva, I. P. Suzdalev, S. V. Novichikhin, V. E. Prusakov, S. P. Valueva |
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| Rok vydání: | 2008 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymer nanocomposite Inorganic chemistry General Engineering Iron oxide Polymer equipment and supplies Condensed Matter Physics Nanoclusters Magnetization chemistry.chemical_compound chemistry Chemical engineering Mössbauer spectroscopy Surface modification General Materials Science human activities Superparamagnetism |
| Zdroj: | Nanotechnologies in Russia. 3:729-733 |
| ISSN: | 1995-0799 1995-0780 |
| Popis: | The synthesis of iron oxide nanoclusters in the matrix of an interpolyelectrolyte complex based on poly(acrylic acid) and polyethylenimine is described. The effect of the method of cluster formation (by the oxidation or reduction of iron ions) on the magnetic properties of polymer nanocomposites was studied. The influence of the surface modification of iron oxide nanoclusters in a polymer matrix on the interaction of the nanoclusters with the matrix, the appearance of first-order phase transitions, and the disappearance of superparamagnetism were examined. Mossbauer spectroscopy and magnetization measurements were used for identifying first-order magnetic phase transitions or superparamagnetism. |
| Databáze: | OpenAIRE |
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