Abstract

A simple microwave assisted solvothermal route has been developed to prepare amorphous (γ-) and crystalline (ε-, β- and α-) Fe2O3 nanophases. The prepared nanophases have been characterized chemically, structurally, optically and magnetically by the available methods like thermogravimetric and differential scanning calorimetric analyses, X-ray powder diffraction analysis, scanning electron microscopic and transmission electron microscopic analyses, energy dispersive X-ray spectroscopic and UV–visible spectral analyses, and vibrating sample magnetometric measurements. The average particle sizes obtained through transmission electron microscopic analysis are 19, 24, 29 and 33nm respectively for the γ-, ε-, β- and α-Fe2O3 phases. Results obtained in the present study indicate that the method adopted is an effective one for preparing the γ-, ε-, β- and α-Fe2O3 nanophases with good purity, stoichiometry, homogeneity, and optical and magnetic properties.

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