Abstract
In order to investigate the electromagnetic effect in nanoscale, a multiferroic BNTFC/LSMO composite thin film was fabricated on (0 0 l) oriented LAO single crystal substrate employing a PLD system. Structural characterization showed that the LSMO layer is pseudo-cubic but the BNTFC presents a four-layer perovskite structure. Tests of physical properties indicated that such a composite thin film exhibits a good ferroelectricity, the Pr and EC are 5.04 μC·cm−3 and 587.12 kV·cm−1, respectively. And the ferromagnetism of the BNTFC system has been improved effectively with the introduction of LSMO lamina, the MS and HC are promoted to 68.13 emu·g−1 and 0.35 kOe. In the meantime, the dynamic process of the structure and movement of the out-of-plane ferromagnetic domains at different voltages using MFM innovatively was studied. It suggested that an applied voltage does change the distribution of ferromagnetic domains of the sample — voltage-regulated magnetization reversal.
Published Version
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