Magnetoelectric Effect in (0-3) CoFe2O4-BaTiO3(20/80) Composite Ceramics Prepared by the Organosol Route

In this paper we report on a new approach to synthesize core/shell cobalt iron oxide/barium titanate composite nanoparticles combining the co-precipitation and organosol crystallization techniques. The weight fraction of CoFe2O4 and BaTiO3 was 20% and 80% respectively. The obtained core/shell powder was used to sinter (0-3) composite multiferroic ceramics. Ferroelectric, magnetic, and magnetoelectric properties of the ceramics were studied. It was found that the value of the converse magnetoelectric coefficient, alpha(c), reaches 4.4 center dot 10(-12) s center dot m(-1) at the magnetic field mu H-0(dc) = 0.15 T and T = 285 K.