Tuning magnetic ground states of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mrow> <mml:mi>R</mml:mi> <mml:mi>Mn</mml:mi> </mml:mrow> <mml:mn>6</mml:mn> </mml:msub> <mml:msub> <mml:mi>Sn</mml:mi> <mml:mn>6</mm

By employing computational methods, the authors have demonstrated that dimensionality reduction provides an effective strategy for engineering electronic and magnetic structures. Specifically, starting from the bulk Kagome parent compound RMn${}_{6}$Sn${}_{6}$ (R = Lu, Mg), this approach has led to the design of ferromagnetic thin films RMn${}_{6}$Sn${}_{8}$, where the RKKY interaction stabilizes robust ferromagnetism. These films exhibit Weyl states, nontrivial band crossings, large Berry curvature, and a pronounced anomalous Hall effect. As Kagome metallic Weyl ferromagnets, these 2D structures combine strong magnetism with nontrivial topology, offering pathways for spintronics, low-power memory, Hall sensors, and energy-efficient device engineering.