ULTRA-LIGHT SOL-GEL DERIVED MAGNETIC NANOSTRUCTURED MATERIALS

摘要

Monolithic ultra-porous and ultra-light magnetic nanocomposites can be obtained by impregnating the pores of silica matrices formed by sol-gel processing, with anhydrous metal salts precursors, followed by the supercritical drying at high pressure. The crystalline phases identified by X-ray diffraction consist of metallic Ni, iron oxide spinel and Ni-ferrite, respectively.