Abstract In this letter, we demonstrate an apparent magnetically activated electric polarization reorientation at room temperature through magneto-electric coupling in (1 − x)BiFeO3–xPbTiO3 (x = 0.0, 0.1, 0.2, 0.3, 0.4 and 0.5) composites. A change in magnetic field causes variation in electric polarization, attributed to the destruction of space modulated spin antiferromagnetic structure with the PbTiO3 addition. This behavior also results in the increase in magnetic parameters as the coercive field of the composites increases with the increase in PbTiO3 contents. The analysis demonstrates that the magneto-electric coupling in the prepared ferromagnetic/ferroelectric composites is dominant at room temperature, quite feasible for modern day devices.

中文翻译：

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(1-x)BiFeO3-xPbTiO3 多铁性复合材料中的磁驱动强极化

摘要 在这封信中，我们通过 (1 − x)BiFeO3–xPbTiO3 (x = 0.0, 0.1, 0.2, 0.3, 0.4 and 0.5) 复合材料中的磁电耦合证明了室温下明显的磁激活电极化重定向。磁场的变化导致电极化的变化，这是由于添加 PbTiO3 破坏了空间调制自旋反铁磁结构。随着复合材料的矫顽场随着 PbTiO3 含量的增加而增加，这种行为也导致磁参数增加。分析表明，制备的铁磁/铁电复合材料中的磁电耦合在室温下占主导地位，这对于现代设备来说非常可行。