Field-induced changes in polarization and magnetization in Tb0.3Dy0.7Fe2/PZT laminate composite

We have presented a theoretical model to describe the magnetoelectric coupling in Tb0.3Dy0.7Fe2/PZT laminate composite material. In this model, the stresses introduced by the magnetic field or electric field in the composite material are assumed to be the axial force. The magnetization of magnetostrictive phase can indirectly couple with the electrical polarization of piezoelectric phase through the stresses. The numerical results have shown that both the magnetic field and electric field can cause significant changes in the magnetization and electric polarization in the composite material. (C) 2012 American Institute of Physics. [doi:10.1063/1.3684984]