Room temperature manipulation of the ferromagnetic state via an electric field is investigated in Ni/BiFe0.95Mn0.05O3 thin film heterostructures. A 600% increase in the magnetic coercive field of the Ni layer is observed at the initial DC electrical poling of the ferroelectric BiFe0.95Mn0.05O3 layer. The magnetoelectric effect is remanent, and the magnetic coercive field can be modulated between a low value and a high value by successively switching the ferroelectric polarization. After the initial poling, the coercive field difference is decreased by subsequent back and forth switching. However, the magnetic bi-stability is preserved at least up to 250 cycles, which is promising for spintronic applications.

中文翻译：

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BiFeO3基磁电异质结构中磁性的可循环和非易失性电场控制

在 Ni/BiFe0.95Mn0.05O3 薄膜异质结构中研究了通过电场对铁磁态的室温操纵。在铁电 BiFe0.95Mn0.05O3 层的初始直流电极化处观察到 Ni 层的矫顽磁场增加了 600%。磁电效应是剩余的，通过连续切换铁电极化，可以在低值和高值之间调制矫顽磁场。在初始极化之后，矫顽场差通过随后的来回切换而减小。然而，磁性双稳态至少可以保持 250 次循环，这对于自旋电子应用来说是有希望的。