Controlled synthesis and phase characterization of Fe-based nanoparticles obtained by thermal decomposition |
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Authors: | K Simeonidis S Mourdikoudis M Moulla I Tsiaoussis C Martinez-Boubeta M Angelakeris C Dendrinou-Samara O Kalogirou |
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Institution: | 1. Department of Physics, Aristotle University, Thessaloniki GR-54124, Greece;2. Department of Chemistry, Aristotle University, Thessaloniki GR-54124, Greece |
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Abstract: | Iron oxide nanoparticles were synthesized by the thermal decomposition of Fe(acac)3 and Fe(CO)5. Three different homogeneous procedures were used for the controlled synthesis of Fe3O4, γ-Fe2O3 and Fe3O4/γ-Fe2O3 mixture nanocrystals. A combination of characterization techniques was used in order to distinguish these oxides. The controllable size, the narrow distribution and the rhombic self-assembly of the nanoparticles were revealed by the high-resolution transmission electron microscopy images and the X-ray powder diffraction results. For the quantitative analysis of the samples manganometry was used. Preliminary magnetic measurements indicated the size and composition dependence of saturation magnetization, a superparamagnetic behavior of the samples and some ferromagnetic features. |
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Keywords: | 81 07 &minus b 61 46 &minus w 61 46 df |
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