Abstract We report the dielectric, ferroelectric, magnetic and magnetoelectric properties of three-phase composite thick films (thickness~0.25 mm) of BaFe12O19–poly(vinylidene-fluoride)–BaTiO3 (abbreviated as BaFBT60) and SrFe12O19–poly(vinylidene-fluoride)–BaTiO3 (abbreviated as SrFBT60). A very strong magnetoelectric voltage coefficient (α33) of about 60 mV/cmOe and 40 mV/cmOe was observed at a small magnetic field of 300 Oe for the BaFBT60 and SrFBT60 films, respectively. The nature of the zero field cooling as well as the field cooling curves of composite films was suggested as a spin-glass type behavior. A remarkable value of magnetocapacitance (MC) of about 7.2% was observed for BaFBT60 composite film. The switchability phenomena of the ferroelectric domains were observed in the presence of the magnetic field of about 700 Oe. In addition, very significant information about the domain wall mobility was obtained from the irreversible (α) and reversible (ϵre) coefficients as calculated from the Rayleigh analysis.

中文翻译：

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具有铁电畴可切换性的三相复合薄膜中的低磁场诱导强磁电耦合

摘要 我们报告了 BaFe12O19-聚（偏二氟乙烯）-BaTiO3（缩写为 BaFBT60）和 SrFe12O19-聚（偏二氟乙烯）三相复合厚膜（厚度~0.25 mm）的介电、铁电、磁和磁电性能–BaTiO3（缩写为 SrFBT60）。对于 BaFBT60 和 SrFBT60 薄膜，在 300 Oe 的小磁场下观察到非常强的磁电电压系数（α33），约为 60 mV/cmOe 和 40 mV/cmOe。零场冷却的性质以及复合膜的场冷却曲线被认为是自旋玻璃型行为。对于 BaFBT60 复合膜，观察到约 7.2% 的显着磁电容 (MC) 值。在大约 700 Oe 的磁场存在下观察到铁电畴的可切换现象。此外，