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Visible-light controlled ferroelectricity and magnetoelectric coupling in multiferroic BiCoO3 nanoribbons

机译:多铁性BiCoO3纳米带中的可见光控制的铁电和磁电耦合

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摘要

Multiferroic materials hold promising potential for multifunctional applications because they simultaneously possess ferromagnetism and ferroelectricity. Moreover, the magnetoelectric coupling in multiferroic materials is especially important for basic research, and it has significant applications in nonvolatile multiple-state memory devices. In this work, for the first time, we report that visible light can control the ferroelectricity and magnetoelectric coupling in BiCoO3 nanoribbons. The relative visible-light-induced improvement of the saturated ferroelectric polarization is more than 60%. The relative visible-light-induced enhancement of the magnetoelectric effect is about 10%, indicating that light offers additional degree of freedom in controlling the coupling between ferromagnetism and ferroelectricity.
机译:多铁性材料同时具有铁磁性和铁电性,因此在多功能应用方面具有广阔的发展潜力。此外,多铁材料中的磁电耦合对于基础研究尤为重要,并且在非易失性多态存储器件中具有重要的应用。在这项工作中,我们首次报道可见光可以控制BiCoO3纳米带中的铁电和磁电耦合。可见光引起的饱和铁电极化的相对改善大于60%。磁电效应的相对可见光诱导的相对增强约为10%,这表明光在控制铁磁和铁电之间的耦合方面提供了更多的自由度。

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