کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1804317 | 1024647 | 2007 | 4 صفحه PDF | دانلود رایگان |
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.
Journal: Journal of Magnetism and Magnetic Materials - Volume 316, Issue 2, September 2007, Pages e1–e4