Morphology, microstructure and magnetic properties of Co2FeAl alloy nanostructures prepared at low temperature.

Here we report a facile solution-phase synthesis of Co 2 FeAl alloy nanostructures by controlling the reaction temperatures and reaction times. The use of Teflon autoclave ensured the formation of pure Co 2 FeAl alloy nanostructures even at a low reaction temperature of 60 °C. X-ray diffraction analysis confirmed the formation of good crystalline Co 2 FeAl alloy with average grain size of about 20–30 nm. Scanning electron microscope observations showed the evolution of Co 2 FeAl alloy nanostructures from cluster flower nanostructure to layered columnar nanostructure. Magnetic investigations showed high saturation magnetization of 189.2 emu/g and low coercivity of 23 Oe of Co 2 FeAl alloy nanostructures at 150 °C. These Co 2 FeAl alloy nanostructures with special structure morphologies and good soft magnetic properties have great potential in some industry fields. [ABSTRACT FROM AUTHOR]