Formation and evolution of crystalline magnetic phases of CoFe2O4 with temperature depending on the nature of the diol used

An organic precursor was obtained from cobalt nitrate and iron nitrate with different diols (etilendiol, 1,2-propanediol and 1,3-propanediol). The precursor was observed through thermal analysis and FT-IR spectrometry, techniques aimed at tracking the formation of carboxylate type complex combinations and establishing the optimal synthesis temperature. The formation of magnetic crystalline phases is observed through advanced heat treatments.

► All samples obtained have a hard magnetic behavior due to high anisotropy of CoFe2O4.► The shape of magnetization curves are strongly influenced by temperature. ► Nature of crystalline phases depends on the nature of the diol used. ► By TEM we observed the presence of CoFe2O4 spherical nanoparticles of 20 nm in size. ► Nanocrystalites can be applied in cancer therapy in treating breast cancer tumors.