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近几十年来,人们对于下一代多功能磁电器件(例如换能器,传感器等)的需求越来越高,因此吸引了众多科学家探索与研究多铁性材料的磁电耦合效应,在室温以及低维条件下寻求电与磁的强耦合.由于单相多铁性材料的磁电耦合强度非常弱,或者耦合温度远远低于室温,科学家们开始设计和研究多铁性复合材料及其纳米结构.本综述将从应力、电荷转移、磁交换作用,以及轨道杂化四个方面介绍多铁性复合材料磁电效应的耦合机制.通过充分了解这些序参量在磁电耦合效应中的作用,我们能够成功实现纳米尺度下外电场(磁场)对磁性能(铁电性能)的调控.此外,这些人造多功能纳米复合材料也为设计自组装纳米结构以及将来实现多功能器件的应用提供了广阔的平台.
In recent decades, the demand for the next generation of multi-functional magnetoelectric devices (such as transducers, sensors, etc.) has become increasingly high, and many scientists have been attracted to explore and study the magnetoelectric coupling effect of multiferroic materials. At room temperature As well as low-dimensional conditions to find the strong coupling of electricity and magnet.As single-phase multi-ferromagnetic coupling strength is very weak, or the coupling temperature is far below room temperature, scientists began to design and study of multi-iron composites and its Nanostructure This review will introduce the coupling mechanism of magnetoelectric effect of multiferroic composites from four aspects of stress, charge transfer, magnetic exchange and orbital hybridization. By fully understanding the role of these order parameters in the magneto-electric coupling effect , We are able to successfully control the magnetic properties (ferroelectric properties) of external electric fields (magnetic fields) at the nanoscale.In addition, these man-made multifunctional nanocomposites are also provided for the design of self-assembled nanostructures and the future realization of multifunctional devices Broad platform.