Abstract
2-2 Type layered CFO/PZT (CoFe2O4/Pb(Zr0.52Ti0.48)O3) magnetoelectric composite films with four different structures were prepared on Pt/Ti/SiO2/Si substrates via a sol–gel method. These films annealed at 700°C contain PZT and CFO phase without impurity phases. The prepared composite films exhibit 2-2 type layered structures with obvious interfaces and no diffusions exist between CFO and PZT films. Ferromagnetic and ferroelectric responses were simultaneously observed in the composite films. These composite films exhibit good magnetoelectric coupling effects and the magnetoelectric voltage coefficients (αE) increase with increasing the volume contents of CFO films in composite films. The αE value of composite film (2PZT/4CFO/2PZT/4CFO/2PZT) reaches a maximum (227mVcm−1Oe−1) among all the prepared composite films.
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