Magnetoelectric effect in Pb(Zr0.95Ti0.05)O3 and CoFe2O4 heteroepitaxial thin film composite

Abstract Multiferroic epitaxial films, include SrRuO 3 /Pb(Zr 0.95 Ti 0.05 )O 3 /CoFe 2 O 4 has been successfully deposited on SrTiO 3 substrate by pulsed-laser deposition technique. The results show that the prepared films exhibit a single phase. The Pb(Zr 0.95 Ti 0.05 )O 3 (PZT) film was highly textured with (1 0 0) orientation and gives good ferroelectric properties with saturated polarization of 15 μC/cm 2 . The magnetic coercivity of CoFe 2 O 4 film on Pb(Zr 0.95 Ti 0.05 )O 3 has been dampened to 0.9 kOe. The anisotropic magnetically behavior of CoFe 2 O 4 film was changed to isotropic by using high Zr concentrated PZT as underneath layer. Heterostructure films show a good ferromagnetic and ferroelectric coupling that lead to the large magnetoelectricity of 287 mV/cm Oe.