SYNTHESIS AND CHARACTERIZATION OF CUBIC COBALT FERRITE NANOPARTICLES

摘要

The preparation of approximately 20 g cubic cobalt ferrite nanoparticles (edge length 30-60 nm) with composition Co_xFe_(3-x)O_4 (0.85 · x · 1.00 ±0.02) using the co-precipitation method in a batch type reactor has been investigated. The morphology, composition, size and size distribution of the synthesized particles were characterized by transmission electron microscopy, X-ray diffraction and the BET method. The majority of the particles were cubic although spherical particles were also observed. Aging of the suspensions resulted in a narrowing of the initial size distribution with no effect on the morphology and composition of the particles.