摘要
Abstract
In the past decade, multiferroic materials have attracted extensive research interests due to the rich physics involved and promising potential applications. Being the prototype room tempera-ture multiferroic, BiFeO3 (BFO) becomes one of the focal points for the condensed matter physics and materials science studies, particularly due to its prominent ferroelectric properties and above room-temperature antiferromagnetic transition temperature. Researchers have carried out a series of seminal studies with great attentions to the structure, ferroelectric, magnetic and magnetoelec-tric properties of this “star material”. BFO also becomes a model system to study the emergent phenomena at the quantum-confined superstructures, such as heterointerface, ferroelectric domain wall, structure phase boundary, nano-pillar, superlattice and so on. In this paper, we review the recent studies on the understanding of novel functionalities formed at a series of BFO superstruc-tures due to the quantum confinement effects. We focus on not only the magnetoelectric coupling at the BFO superstructures, a central question of multiferroic studies, but also the other function-alities, such as local transport, photovoltaic, piezoeleletric, etc. We summarize by highlighting several possible and promising direction for the future studies of multiferroic superstructures.关键词
多铁性/磁电耦合/异质界面/畴结构/纳米结构/衍生现象Key words
multiferroic/magnetoelectric coupling/heterointerface/domain structure、nano-structure/emergent phenomena分类
数理科学
