Abstract
CoFe2O4–Pb(Zr0.52Ti0.48)O3 (CFO–PZT) multilayered composite film was prepared on Pt/Ti/SiO2/Si substrate via a sol–gel method and spin-coating technique. Results show that PZT and CFO phases exist in the composite film, calcined at 700 °C, besides substrate phase, and no obvious impurity phases can be detected. The composite film exhibits layered structure with obvious boundary between CFO and PZT films. Ferroelectric and ferromagnetic properties were simultaneously observed in the composite film, evidencing the ferroelectric and ferromagnetic properties in the composite film. The composite film exhibits both good magnetic and electric properties, as well as, magnetoelectric (ME) effect. The saturation magnetization value of the composite film is lower than that of the pure CFO film derived by the same processing as a result of the effect of the nonferromagnetic PZT layers. Ferroelectric hysteresis loops reveal that saturated polarization and remanent polarization of the composite film are lower than those of the pure PZT films. The composite film exhibits a very large ME effect, which makes the composite film attractive for technological applications as devices.
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Acknowledgements
The authors wish to acknowledge the financial support of this research from Specialized Research Fund for the Doctoral Program of Higher Education of China (200803591037) and the Scientific Research Fund of Hefei University of Technology for Doctor Degree (GDBJ2008-008).
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Shi, M., Yu, G.Y., Su, H.L. et al. Magnetoelectric properties of CoFe2O4–Pb(Zr0.52Ti0.48)O3 multilayered composite film via sol–gel method. J Mater Sci 46, 4710–4714 (2011). https://doi.org/10.1007/s10853-011-5381-3
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DOI: https://doi.org/10.1007/s10853-011-5381-3