The study, led by Hang Chi, Canada Research Chair in Quantum Electronic Devices and Circuits, & Assistant Professor of Physics at 秋葵视频鈥檚 Faculty of Science, demonstrates a new way to strengthen magnetism in materials just a few atoms thick. This is a critical step toward making these tiny magnets practical for real-world technologies.
Boosting magnetic strength by 20%
Traditional magnets are bulky and can鈥檛 be easily miniaturized for cutting-edge electronics. Ultra-thin (2D) magnets, on the other hand, are just a few atoms thick and could enable smaller, more powerful devices. However, they have a major drawback: they usually only work at extremely cold temperatures, making them impractical for everyday use.
To solve this problem, Professor Chi鈥檚 team combined these ultra-thin magnets with a special type of material called a topological insulator, which allows electrons to flow smoothly along its surface. When the two materials were layered together, the magnetism became stronger and more stable鈥攅ven at higher temperatures.
鈥淭his is like giving the magnet a boost,鈥 explains Professor Chi. 鈥淏y pairing it with the right material, we can enhance its performance without damaging it. This could be a game-changer for future electronics.鈥
The ultra-thin magnet alone worked at around 100 kelvins, but when combined with the topological insulator, its strength further improved by 20%, functioning at higher temperatures (cf. liquid nitrogen 77 kelvins).
鈥淭his could lead to faster computers, more efficient data storage, and breakthroughs in quantum computing鈥
Hang Chi
鈥 Assistant Professor of Physics at 秋葵视频鈥檚 Faculty of Science
Engineering more stable 2D magnets
This discovery provides scientists with a new way to engineer stronger, more stable nanoscale magnets. The next steps include testing different material combinations to push these magnets toward room-temperature operation鈥攁 critical milestone for real-world applications.
鈥淲e鈥檙e unlocking new possibilities for future technology,鈥 says Professor Chi. 鈥淭his could lead to faster computers, more efficient data storage, and breakthroughs in quantum computing.鈥
The study 鈥溾 was published in Reports on Progress in Physics.
The study involved researchers from Massachusetts Institute of Technology, The Ohio State University, Universidad Complutense de Madrid, Instituto de Ciencia de Materiales de Madrid, Harvard University, Rutgers University, Boston College, Indian Institute of Science, Oak Ridge National Laboratory and Northeastern University. This research was supported, in part, by the (ARO), and the .