Applied Surface Science, Vol.330, 216-220, 2015
Fabrication and hyperthermia effect of magnetic functional fluids based on amorphous particles
An experimental study conducted on the preparation and hyperthermia effect of magnetic functional fluids based on Fe73.5Nb3Cu1Si13.5B9 amorphous particles, CoFe2O4 nanoparticles and Fe3O4 nanopartides dispersed in water is presented. Scanning electron microscopy, X-ray diffraction, differential scanning calorimetry and vibrating sample magnetometer methods have been used to characterize the morphology, structure and magnetic property of the amorphous particles. It is disclosed that the Fe73.5Nb3Cu1Si13.5B9 particles are still amorphous after being milled for 48 h. Moreover, the saturation magnetization of metallic glass particles is approximately 75% and 50% larger than that of CoFe2O4 nanoparticles and Fe3O4 nanoparticles, respectively. The hyperthermia experiment results show that when alternating electrical current is 150A, the temperature of the functional fluids based on amorphous particles could rise to 33 degrees C in 1500s. When the current is 300A, the final stable temperature could reach to 60 degrees C. This study demonstrates that the Fe(73.5)Nb(3)Cu1Si(13.5)B(9) magnetic functional fluids may have potential on biomedical applications. (C) 2015 Elsevier B.V. All rights reserved.