Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Characterization of magnetic nanoparticles synthesized by sonomechanical method
We have synthesized magnetic nanoparticles using the newly developed sonomechanical method with the FeSO47H2O and characterized crystallographic structural changes, surface morphology, chemical bonding states and magnetic properties. The crystallographic structure of the nanoparticles was characterized with high resolution X-ray powder diffraction (XRD) analysis. The surface morphology of the nanoparticles was observed by scanning electron microscopy. The chemical bonding states of Fe ions in the nanoparticles were examined by X-ray photoelectron spectroscopy (XPS) analysis. The magnetic properties of the nanoparticles were analyzed with vibrating sample magnetometer at room temperature. The XRD patterns and XPS spectra indicated that the synthesized nanoparticles were mixture of magnetite (Fe3O4) and maghemite (γ-Fe2O3). As varying post annealing temperature, it seems that there was occurred transition to magnetite to maghemite and maghemite to magnetite.
Characterization of magnetic nanoparticles synthesized by sonomechanical method
We have synthesized magnetic nanoparticles using the newly developed sonomechanical method with the FeSO47H2O and characterized crystallographic structural changes, surface morphology, chemical bonding states and magnetic properties. The crystallographic structure of the nanoparticles was characterized with high resolution X-ray powder diffraction (XRD) analysis. The surface morphology of the nanoparticles was observed by scanning electron microscopy. The chemical bonding states of Fe ions in the nanoparticles were examined by X-ray photoelectron spectroscopy (XPS) analysis. The magnetic properties of the nanoparticles were analyzed with vibrating sample magnetometer at room temperature. The XRD patterns and XPS spectra indicated that the synthesized nanoparticles were mixture of magnetite (Fe3O4) and maghemite (γ-Fe2O3). As varying post annealing temperature, it seems that there was occurred transition to magnetite to maghemite and maghemite to magnetite.
Characterization of magnetic nanoparticles synthesized by sonomechanical method
Ki-Chul Kim, (Autor:in) / Eung-Kwon Kim, (Autor:in) / Jae-One Lee, (Autor:in) / Young-Sung Kim, (Autor:in)
01.10.2006
499766 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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