Use elastic mechanics model to briefly derive the magnetoelectric voltage coefficients of magnetostrictive-piezoelectric bilayer according to the constitutive equations

the transverse magnetoelectric coupling of nickel ferrite-lead zirconate titanate（NiFe2O4—Pb（Zr

Ti）O3

NFO-PZT）layered composites are calculated by using the corresponding material parameters of individual phases.NiFe2O4 samples are synthesized with sol-gel technique.Layered composites NFO-PZT and NFO-PZT-NFO are fabricated by binding discs of nickel ferrite NFO and commercially available PZT

and the transverse magnetoelectric effect is researched.The peak value of transverse magnetoelectric coupling for NFO-PZT-NFO trilayer reaches 761.8 mV·A-1 under a bias magnetic field of about 31.8 kA·m-1

which is about three times as large as that of NFO-PZT bilayer.The interface coupling parameters of trilayer is significantly higher than that of bilayer.