Diego Morales

Major: Mechanical Engineering
Mentors: Sarah Schwarz, Professor Stephen Wilson

PROGRESS TOWARDS MEASURING THE EFFECTS OF STRAIN ON ANOMALOUS HALL EFFECT IN TB3SN7

The symmetric square-net lattice structures of Tb3Sn7 and TbSn3 present promising characteristics for spintronics. Both compounds are potential hosts for Skyrmion lattices, which have numerous significant implications. To investigate this further, our research seeks to measure the anomalous hall coefficient of rectangular single crystal samples of Tb3Sn7 and TbSn3 under varying magnetic fields from -9T to 9T, constant 2K, 10K, and 20K temperatures, and additionally, straining the sample to break the lattice symmetry and explore its effect on the anomalous hall coefficient. To accomplish this, the Razorbill FC1X0 strain cell with the appropriate wire configuration and the Physical Property Measurement System (PPMS) DynaCool by Quantum Design is utilized to obtain our data. Complexities in the Razorbill setup, including sample mounting, wire configuration, curing times for insulation, and sample durability, have proven to be quite the challenge to overcome. Coupling this problem with time constraints has led us to pause the strain measurements and adopt a more traditional DC Electrical Transport Option (ETO) puck setup. Our preliminary results offer compelling trends and interesting resistivity graphs, however, external factors including wire contact and sample shape may contribute to destructive noise in our data.