The Electric-Field Controllable Non-Volatile 35° Rotation of Magnetic Easy Axis in Magnetoelectric CoFeB/(001)-Cut Pb(Mg1/3Nb2/3)O3-25%PbTiO3 Heterostructure.

Using in situ electric-field-modulated anisotropic magnetoresistance measurement, a large reversible and nonvolatile in-plane rotation of magnetic easy axis of ∼35° between the positive and negative electrical poling states is demonstrated in Co₄₀Fe₄₀B₂₀/(001)-cut Pb(Mg_1/3Nb_2/3)O₃-0.25PbTiO₃ (PMN-PT). The specific magnetoelectric coupling mechanism therein is experimentally verified to be related to the synchronous in-plane strain rotation induced by 109° ferroelastic domain switching in the (001)-cut PMN-PT substrate. [ABSTRACT FROM AUTHOR]