Synthesis and characterization of nanomagnetic CoFe_2O_4/PEVA composites

摘要

Various techniques such as X-ray diffraction (XRD), scanning electron micrographs (SEM), energy dispersive X-ray (EDX) and a vibrating sample magnetometer (VSM) were used to investigate the structural, morphological and magnetic properties of spinel cobalt ferrite/poly(ethylene-co-vinyl alcohol) or CoFe_2O_4/PEVA nanocomposites. XRD enabled us to determine the structural parameters of CoFe_2O_4/PEVA composites. Nanocrystalline CoFe_2O_4 spinel were uniformly distributed throughout the matrix of PEVA. EDX measurements showed the concentrations of O, Co. C and Fe species involved in the as prepared composite. The magnetization and coercivity of these composites were changed according to the ferrite content.