中文摘要：

BiFeO3多铁性低维纳米结构（如纳米晶、纳米线、纳米管、纳米岛等）因其出色的室温多铁性能以及纳尺度下的新型尺寸效应特性，在新型多态存储器及自旋电子学器件方面受到广泛关注。近年来，人们在BiFeO3多铁性低维纳米结构的制备与表征（电、磁性能以及微结构）方面取得了相当进展，本文对此进行了评述。首先，对高质量的BiFeO3多铁性低维纳米结构的制备方法进行了简短评述，然后介绍了BiFeO3多铁性低维纳米结构的纳尺度电性能与磁性能表征以及磁电耦合效应。最后，综述了BiFeO3多铁性低维纳米结构的微结构研究进展以及BiFeO3多铁性低维纳米结构的理论研究结果，并指出了未来BiFeO3多铁性低维纳米结构研究需要重点解决的一些问题。

英文摘要：

Low-dimensional BiFeO3 nanostructures （e. g., nanocrystals, nanowires, nanotubes, and nanoislands） have gained considerable attentions due to their novel size-dependent properties and outstanding multiferroic properties at room temperature. During recent years, much progress has been made both in fabrications and （ electrical, magnetic and mierostructural） characterizations of BiFeO3 low-dimensional nanostructures. An overview of the state of art in BiFeO31ow-dimensional nanostructures is presented. First, we reviewed the fabrications of high quality BiFeO3 low-dimensional nanostructures via a variety of techniques, and then the nanoscale characterizations of the electrical and magnetic properties of BiFeO3 low-dimensional nanostruetures were introduced. Finally, the enormous progresses made in microstructural characterizations of BiFeO3 low-dimensional nanostructures and the theoretical results about BiFeO3 low-dimensional nanostructures were reviewed, and some key problems in the future research of BiFeO3 low-dimensional nanostruetures were also outlined.