Preparation of Fe-Mn nanoparticles by hydrothermal method based on Al2O3 and study of the different aging conditions effects on their structures

The control of the monodisperse size is very important because the properties of thenanocrystals strongly depend upon the dimension of the nanoparticles [1].Numerouschemical methods can be used to synthesize magnetic nanoparticles such as micro emulsion[2], sol-gel synthesis [3], sonochemical [4] and hydrothermal reactions [5]. The hydrothermaltechnique is an approach to produce high homogeneous nanoparticles [6]. Some parameterslike aging time can affect on nanoparticles’ physical and chemical properties.