In this study, ZnFe2O4 nanofibers were fabricated by facile electrospinning method and subsequent calcination process. The scanning electron microscopy (SEM) images showed that ZnFe2O4 nanofibers which were in diameters of 30-100 nm and consisted of nanograins had typical morphologies of spider nets. The X-ray diffraction (XRD) patterns revealed the typical cubic structure of the ZnFe2O4 nanofibers. The energy dispersive X-ray spectroscopy (EDX) results exhibited the presence of Zn, Fe, and O

more »

... ements in the synthesized nanofibers. The results indicated that the nanograins size increased with the increase of annealing temperatures. The activation energy for grain growth in electrospun ZnFe2O4 nanofibers was estimated to be 10 kJ/mol. Since this value of activation energy was quite small, nanograins easily grew during the calcination process.