Recently, a research team led by Professor Li Xiaoguang from the University of Science and Technology of China, in collaboration with the Li Jianqi Research Group at the Institute of Physics, Chinese Academy of Sciences, has developed and synthesized a novel single-crystal nanoribbon material that exhibits multiferroic properties at room temperature. This groundbreaking work was recently published in Scientific Reports, a journal under the Nature Publishing Group.
Multiferroic materials are unique because they possess both ferroelectric and (anti)ferromagnetic orderings. Their ability to couple electric and magnetic properties makes them highly promising for next-generation applications such as advanced magnetoelectric sensors, non-volatile memory storage, and energy-efficient computing devices. By leveraging the coexistence, competition, and interaction of multiple orderings in quantum materials, researchers are exploring new ways to control electromagnetic behaviors—offering a fresh approach beyond traditional semiconductor technologies. This represents a key direction for future electronic advancements in the post-Moore era.
In their pursuit of new multiferroic materials, Dr. Dong Xining from Professor Li’s group worked closely with the Jianzhi Institute of Physics at the Chinese Academy of Sciences to design and synthesize a Bi4.2K0.8Fe2O9+δ single-crystal nanoribbon with room-temperature multiferroic characteristics. This material is structurally similar to the high-temperature superconductor Bi2Sr2CaCu2O8+δ, but it features a distinct arrangement of atomic layers. The crystal alternates between perovskite-like layers and insulating rock-salt-like layers, resembling barium ferrite. This natural layering creates a built-in magnetoelectric-dielectric superlattice, resulting in a strong magnetoelectric coupling effect at room temperature. Such a structure could pave the way for the development of compact, efficient magnetic devices and integrated systems.
This research was supported by the National Natural Science Foundation of China and the Ministry of Science and Technology, highlighting the growing interest in multiferroic materials and their potential impact on future technology.
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