Research of the magnetoelectric effect of PMN-PT/CFO in magnetic field

In terms of elasticity mechanical theory model, the magnetoelectric voltage coefficient formula is established, using the magnetostrictive properties of CoFe₂O₄(CFO) in the magnetic field, we obtain the changing relations of Pb(Mg_1/3_Nb_2/3)O₃-PbTiO₃(PMN-PT)/CFO magnetoelectric voltage coefficient changing with the magnetic field and other parameters. The magnetoelectric voltage coefficient is also studied as the function of the Magnetic field intensity, PMN-PT volume fraction v, interface coupling coefficient k and PMN-PT dielectric constant in magnetic field. The results show that the magnetoelectric voltage coefficient increase firstly, then gradually decreases to zero with the increase of PMN-PT volume fraction and magnetic intensity; the magnetoelectric voltage coefficient strongly depends on the interface coupling coefficient, which will largely reduce magnetoelectric effect; Meanwhile, Magnetoelectric effect has a certain frequency characteristic, with the increase of frequency, which increase gradually and reaches stability. (authors)