Structural and magnetic properties of Fe2O3 nanoparticles dispersed over a silica matrix

Article Abstract:

The structure and the magnetic properties of a series of Fe2O3-SiO2 nanocomposites prepared by sol-gel method and submitted to thermal treatments in the temperature range 300-900 degrees Celsius, were investigated using a multitechnique approach. Findings indicate that the saturation magnetization lowers in the samples with higher Fe2O3 content. Interparticle interactions also contribute to the decrease as shown by fitting magnetic susceptibility values versus temperature.

Research, Silica, Nanotechnology, Ferric oxide, Magnetic materials, Silicon dioxide

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Nicotine: On the potential role of ionic liquids for its processing and purification

Article Abstract:

The fluid phase behavior of nicotine and ionic liquid mixtures of [[C.sub.2]mim][NT[f.sub.2]], [[C.sub.2]mim][EtOS[O.sub.3], and [[C.sub.n]mim]Cl which explains the phenomena of liquid-liquid equilibrium (LLE) through the analysis of the corresponding phase diagrams is reported.

Analysis, Nicotine, Observations, Molecular dynamics, X-rays, X-ray diffraction, Optical properties, Ionic solutions, Clathrate compounds, Properties, Structure, Chemical properties

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