Получение маггемита путем термического отжига

Abstract

The paper considers the preparation of a nanostructured maghemite powder as a result of thermal magnetite (Fe3O4) treatment. Methods of scanning electron microscopy, energy dispersive analysis, and X-ray analysis were used to analyze the obtained results. X-ray diffraction analysis has showed that as a result of the thermal treatment of the initial powder, γ-Fe2O3 phase (the space group P4132), as well as the phase transition of the crystal structure from Fe3O4 to γ-Fe2O3 with a preferential crystallite orientation for the γ-Fe2O3 phase from the texture plane with Miller indexes (220) are noticed.