正交钙钛矿结构RFeO₃系列稀土正铁氧体材料是一类在近红外波段透明的铁磁材料, 关于RFeO₃的超快自旋重取向及其相干控制的研究近年来成为相关领域的研究热点。由于固态材料的磁化振子和电子自旋共振能谱等基本性质的 “元激发” 能量均在太赫兹能量范围内, 得益于太赫兹技术的发展, 近年来利用太赫兹超快光学调控RFeO₃晶体中不同离子间的交换相互作用、磁各向异性自旋-声子耦合等也取得了一系列突破, 对磁学的基础研究具有重要意义。结合笔者近几年的研究进展, 总结了国内外RFeO₃晶体太赫兹光学调控研究情况, 并对该类晶体的超快光磁研究进行了展望。

RFeO₃ with orthogonal perovskite structure is a class of transparent ferromagnetic materials in the near-infrared wave band, and research on the ultrafast spin reorientation transition of RFeO₃ and its coherence control has become a hot topic in related fields in recent years. As the excitation energy of the basic properties of materials such as magnon and electron spin resonance is within the terahertz energy range, a series of breakthroughs have been made in the terahertz ultrafast optical regulation of RFeO₃ crystals due to the rapid development of THz technology in recent years, which is of great significance to the basic research of magnetism. Combined with the author's research work in recent years, the progress of terahertz optical regulation of RFeO₃ crystals at home and abroad has been reviewed in this paper and the future ultrafast photomagnetic research of RFeO₃ crystals are also prospected.