Nanowerk September 17, 2022
An international team of researchers (USA – UCLA, Oak Ridge National Laboratory, University of Colorado, Northeastern University, Pacific Northwest National Laboratory, Harvard University, Taiwan, India) developed an intrinsic ferromagnetic topological insulator with three nonmagnetic layers of Bi2Te3 between layers of MnBi2Te4, which when combined, created MnBi8Te13. This material design increases the distance between the MnBi2Te4 layers, which successfully eliminated the antiferromagnetic effect, leading to long-range ferromagnetism below 10.5 K with strong coupling between magnetism and charge carriers. They used a combination of synthesis, characterization tools, and theory to confirm the structure and properties of new magnetic topological materials. Researchers believe that a topological insulator that is inherently ferromagnetic is ideal for studying novel topological behaviors, and the phenomena these materials exhibit could help advance quantum technology and increase the energy efficiency of future electronic devices…read more. Open Access TECHNICAL ARTICLE
Neutron diffraction data of MnBi8Te13. Credit: SCIENCE ADVANCES, 22 Jul 2020, Vol 6, Issue 30Â