Effective Magnetic Anisotropy of NixCo1-xFe2O4 Nanoparticles

The study of nanoparticles has generated great interest in recent years in several areas of research. For example, multiferroic magnetoelectrical composite materials. In this way, the combination of ferroeletric materials and ferrites, in special CoFe204 and NiFe204, as magnetic is interesting since these materials are isolating oxides with high transition temperatures and high saturation magnetization. In this work, the effective magnetic anisotropy was studied as a function of the temperature for nanocristaline nickel doped cobalt ferrite samples NixCox-1Fe204., x = 0,0; 0,25; 0,50 and 1).