Structural Determination, Unstable Antiferromagnetism and Transport Properties of Fe-Kagome Y_0.5Fe₃Sn₃ Single Crystals

Kagome materials have been studied intensively in condensed matter physics. With rich properties, various Kagome materials emerge during this process. Here, we grew single crystals of Y_0.5Fe₃Sn₃ and confirmed an YCo₆Ge₆-type Kagome-lattice structure by detailed crystal structure characterizations. This compound bears an antiferromagnetic ordering at T_N = 551 K, and shows a weak ferromagnetism at low temperatures, where an anomalous Hall effect was observed, suggesting the non-zero Berry curvature. With the unstable antiferromagnetic ground state, our systematic investigations make Y_0.5Fe₃Sn₃ a potential Kagome compound for Kagome or topological physics.