Magnetic field-induced elastic bending in bilayers of Tb1−xDyxFe2−y and Pb(Zr1−zTiz)O3

Magnetic field-induced strain in the magnetoelectric bilayers of Tb1−xDyxFe2−y and Pb(Zr1−zTiz)O3 was studied. A butterfly shaped strain curve was observed on the surface of Pb(Zr1−zTiz)O3. The shape of the strain curve was found to be related to the sample thickness and the volume fraction occupied by the ferroelectrics in the bilayer. Theoretical analysis and experimental results showed that magnetoelastic bending in the bilayer composites was largely responsible for the butterfly strain curve.