单相多铁性磁电体磁电起源及耦合机理分析

Analysis of Magnetoelectric Origin and Coupling Mechanism of Single Phase Multiferroic Magnetoelectrics

单相多铁性磁电体是指在同一相下既有铁电性又有铁磁性的材料,其丰富的物理机制和极大的应用潜力近来受到国内外学术界和工程应用领域的广泛关注。电极化和磁化通过内禀的磁电耦合作用为下一代多功能电子器件的设计提供了额外的自由度。简单回顾了单相磁电材料研究的历史以及最新进展,从其导电性、对称性、化学d0性、结构畸变等方面详细讨论了单相多铁性磁电体磁电性的起源及耦合,并简单分析了磁电材料产业化进程中存在的问题,展望了多铁性磁电体的研究及应用前景。

Single phase multiferroic magnetoelectrics are materials with both ferromagnetic and ferroelectrie properties in the same phase, which attract more and more attention both in academic circles and engineering application field because of their fundamental physical mechanisms and wide potential applications. The spontaneous coupling effect between polarization and magnetization provides an additional degree of freedom for the design of the next generation multifunctional electronic apparatus. In this paper, the history and recent progress of the research on single phase multiferroic magnetoelectrics are reviewed simply. In particular, the magnetoelectric origin and coupling mechanism are discussed including electrical properties, symmetry, chemical-＂d^0-ness＂, structural distortions of single phase multiferroic magnetoelectrics. At the same time, the exsiting problems of magnetoelectric material are analyzed for transforming the practical application, and the research and application prospects of rnultiferroic magnetoelectrics are predicted.