Project Description
This research aims to explore the phase diagram of transition metal doped Mn3Al9Si. Mn3Al9Si is theoretically proposed to be an antiferromagnetic topological insulator, and the experimental investigation has not been conducted yet. We have successfully grown single crystals of Mn3Al9Si, and an investigation into its possible topological properties is ongoing. In the meantime, we anticipate modifying the antiferromagnetic ordering in undoped Mn3Al9Si by doping it with magnetic transition metal elements. Our project will involve synthesizing single crystals of Mn3Al9Si and various transition metal doped Mn3Al9Si, using the high-temperature solution growth technique. Compositional analysis and crystal structure studies of the materials will be carried out using the X-ray powder diffraction, X-ray Laue camera, and energy dispersive spectroscopy. Our research will provide the fundamental knowledge of the antiferromagnetic topological insulator that may be useful in future electronics.
Tasks and Responsibilites
The student will learn how to grow Mn3Al9Si single crystals and its sister compounds with various transition metal elements. Initially, the student will primarily observe and assist the mentor’s work, with more hands-on work assigned as the student becomes familiar with the experiment process. Once the desired materials are obtained, the student will also be trained in using the in-house X-ray powder diffractometer, the Laue X-ray camera, and the Scanning Electron Microscope with the energy dispersive spectroscopy to analyze the crystal structure and chemical compositions of the materials.
Desired Qualifications
None Listed.