Progress in magnetic alloys with kagome structure: materials, fabrications and physical properties

Abstract

Many intriguing physical properties, such as frustrated magnetic structure and non-zero Berry curvature, appear in the magnetic alloys kagome structures due to their special lattice structures and symmetries, which can give rise to many interesting electronic structures and meaningful electron transport characteristics. Here, this work aims to offer a systematic review on the progress of magnetic alloys with kagome structure. In the first part, the physical properties of magnetic kagome alloys and their mechanisms are briefly reviewed, including the anomalous Hall effect, anomalous Nernst effect, topological Hall effect, Dirac cone, Weyl point, magnetic skyrmions, magnetic skyrmionic bubbles, etc. In the second part, the fabrication, microstructure and physical properties of hot ferromagnetic kagome alloys, including Co₃Sn₂S₂, Fe₃Sn₂, Fe₅Sn₃, etc. are reviewed. In the third part, the fabrication, microstructure and physical properties of hot antiferromagnetic kagome alloys Mn₃X (X = Sn, Ge, and Ga) are discussed. The fourth part gives a brief outlook, including the recently proposed non-colinear Hall effect, fabrication of kagome alloy epitaxial films, skyrmions in antiferromagnetic kagome alloys, etc, which can provide guidance for exploring novel physical properties in magnetic kagome alloys and designing novel spintronic devices.