Magnetism of FF6.2/SiO2 nanocomposites as observed by static and dynamic probes

We report on magnetic behavior of the electromagnetic compatibility (EMC) compound FF6.2 and composites prepared by the modified Stober method using FF6.2 as the magnetic ion-containing (Fe2+/Fe3+) precursor. The composites were characterized by the X-ray diffraction analysis (XRD) and morphology of the magnetic powders was investigated by a scanning electron microscope (SEM) and a high resolution transmision electron microscope (HR TEM). Magnetic properties of the materials were studied by measurements of the magnetization, AC susceptibility and Mossbauer spectra. (C) 2006 Elsevier B.V. All rights reserved.