Research progress of preparation of large-scale two-dimensional magnetic materials and manipulation of Curie temperature

Abstract

To date, despite the continuous improvement of integrated circuit manufacturing technology, it has been limited by quantum effects and the shrinking of device size has caused the industry to encounter bottlenecks such as low reliability and high power consumption. The “Moore’s Law” that has lasted for nearly 50 years in the microelectronics industry will not be sustainable. In 2004, the advent of graphene, a two-dimensional (2D) material, brought new opportunities to break through the power consumption bottleneck of integrated circuits. Due to the low dimensionality, 2D materials exhibit a variety of fasinatingly electrical, ferromagnetic, mechanical, and optical properties at an atomic level. Among them, ferromagnetism has a wide range of applications in information processing, magnetic memory and other technologies. However, only a few 2D ferromagnetic materials are successfully synthesized. Meanwhile, the magnetic long-range order will be strongly suppressed within a limited temperature range due to thermal fluctuations, and thus bringing non-ignorable limitations and challenges to subsequent work. Therefore, the realization and control of room-temperature ferromagnetism in 2D magnetic materials is the major concern at this stage. In light of the above, this review first introduces the development process, preparation methods and superior properties of 2D magnetic materials in detail, and then focuses on the methods of manipulating the Curie temperature of 2D magnetic material. Finally, we briefly give an outlook of the application prospects in the future.