Figure 9: (a) Crystal structure of Fe3Sn2 showing the kagome bilayers separated by layers of Sn atoms. (b) View perpendicular to the -plane showing an Fe kagome layer: the red and blue Fe–Fe bonds denote two different sizes of equilateral triangles. The Sn atoms within the bilayers occupy positions at the centre of the kagome hexagons to form a triangular network. The figure is taken from [13].