Controlling Exchange Interactions and Emergent Magnetic Phenomena in Layered 3d‐Orbital Ferromagnets

• Published in: Advanced Physics Research Vol. 2; no. 6
• Main Authors: Bi, Xiangyu, Qiu, Caiyu, Qin, Feng, Huang, Junwei, Yuan, Hongtao
• Format: Journal Article
• Language: English
• Published: Edinburgh John Wiley & Sons, Inc 01.06.2023; Wiley-VCH
• Subjects: 3d‐orbital ferromagnets; Anisotropy; Electrons; exchange interaction; Exchanging; Ferromagnetism; Heisenberg model; Magnetic materials; Magnetic properties; Magnetism; Modulation; spintronic devices; spin‐orbit coupling; Stoner‐Wohlfarth model
• ISSN: 2751-1200; 2751-1200
• DOI: 10.1002/apxr.202200106

Layered 3d‐orbital ferromagnet is an ideal research platform to experimentally achieve intrinsic 2D ferromagnetism and theoretically study the quantum nature of magnetic exchange interactions therein. A variety of magnetic phases can emerge from the strongly correlated feature of 3d‐orbital electrons, in which their exchange interactions can be effectively modulated by various kinds of external stimuli. Therefore, controlling the emergent magnetic phenomena of layered 3d‐orbital ferromagnets is significant in both fundamental science and practical applications. Considering the roles of magnetic exchange interactions, this review summarizes recent progress in controlling the emergent magnetic properties of layered 3d‐orbital ferromagnets by systematically introducing modulation methods, underlying mechanisms, and device applications. The existing challenges and future prospects for this research field are also outlined, shedding light on finding optimized magnetic materials, exploring powerful modulation techniques, and designing multifunctional new concept devices. The magnetic properties of layered 3d‐orbital ferromagnets can be easily modulated by multiple external stimuli by tuning the strength of the exchange interaction and spin orientations therein. This review introduces the strategies of magnetic property modulation for layered 3d‐orbital ferromagnets. Several modulation techniques, including electronic, mechanical and interfacial engineering, are reviewed, and an outlook on the remaining puzzling subjects and further developments is summarized.