Abstract
The magnetoelectric films of Ba0.9Ca0.1TiO3(BCT)/CoFe2O4(CFO) were deposited on Pt(111)/Ti/SiO2/Si(100) substrates by the sol-gel and spin-coating method under three kinds of heat-treatment conditions. It is shown that the heat-treatment conditions have a great effect on the ferroelectric, ferromagnetic and magnetoelectric properties of the composite films. Among the composite films prepared under three kinds of heat-treatment conditions, the composite films prepared under the complete heat-treatment condition (CHC composite films) have the best ferroelectric, ferromagnetic and magnetoelectric properties. They possess largest value of αE (82 mV cm−1 Oe−1). The complete heat-treatment condition is the most appropriate heat-treatment condition for obtaining the best magnetoelectric properties. Ferroelectric phase and ferromagnetic phase can coexist without inter-diffusion at the interface in CHC composite films.
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Acknowledgements
This work was funded by National Natural Science Foundation of China (No. 51472069). The authors would like to thank Prof. Xiaoguang Li, Department of Physics, University of Science and Technology of China, for the assistance in the magnetoelectric measurement.
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Shi, M., Xu, Y., Zhang, Q. et al. Impact of heat-treatment conditions on ferroelectric, ferromagnetic and magnetoelectric properties of multi-layered composite films of Ba0.9Ca0.1TiO3/CoFe2O4. J Mater Sci: Mater Electron 30, 19343–19352 (2019). https://doi.org/10.1007/s10854-019-02296-8
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DOI: https://doi.org/10.1007/s10854-019-02296-8