Morphological characterization by HRTEM and STEM of Fe3O4 hollow nano-spheres

A. IBARRA; G.F. GOYA; J. ARBIOL; E. LIMA JR.; H.R. RECHENBERG; J. VARGAS; R.D. ZYSLER; M.R. IBARRA

Aachen

Congreso; EMC 2008 14th European Microscopy Congress; 2008

Morphology, suface and finite size effectsin magnetic nanoparticles have been the subject of growing interest in recent years from both experimental and theroretical point of view. The magnetic properties are strongly associated twith the morphological and structural homogencity of the nanoparticles. Interparticle interactions also play an important role in the magnetic behaviour of an ensemble of nanoparticles, which differs from that of non-interacting systems.The aim of this work is the characterization, by means of transmission electron microscopy (TEM), of the morphology ans structure of Fe3O4 nanoparticles prepared by chemical route in order to understand their magnetic behaviour.