Magnetic properties of triethylene glycol coated CoFe2O4 and Mn0.2Co0.8Fe2O4 NP's synthesized by polyol method

Abstract In this study, we reported on the structural and magnetic properties of TEG-CoFe 2 O 4 and TEG-Mn 0.2 Co 0.8 Fe 2 O 4 nanocomposites produced by the glycothermal reaction (polyol). X-ray diffraction (XRD), transmission electron microscopy (TEM) and vibration sample magnetometer (VSM) analysis have been carried out in order to understand the effect of Mn 2+ into CoFe 2 O 4 and it was observed that the addition of Mn 2+ tends to reduce the crystallite size, increase the a o (cell parameter) and increase the T B . The presence of adsorbed polyol entities on the surface of the CoFe 2 O 4 and Mn 0.2 Co 0.8 Fe 2 O 4 NP's was also proven by TG measurements. FT-IR analysis suggested the presence of adsorbed TEG molecules on the surface of CoFe 2 O 4 and Mn 0.2 Co 0.8 Fe 2 O 4 NP's.