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Helicity indicates the in‐plane magnetic‐moment swirling direction of a skyrmionic configuration. The ability to reverse the helicity of a skyrmionic bubble via purely electrical means has been predicted in frustrated magnetic systems; however, it has been challenging to observe this experimentally. The current‐driven helicity reversal of the skyrmionic bubble in a nanostructured frustrated Fe 3 Sn 2  magnet is experimentally demonstrated. The critical current density required to trigger the helicity reversal is 10 9 –10 10  A m −2 , with a corresponding pulse‐width varying from 1 µs to 100 ns. Computational simulations reveal that both the pinning effect and dipole–dipole interaction play a crucial role in the helicity reversal process.

Current‐Induced Helicity Reversal of a Single Skyrmionic Bubble Chain in a Nanostructured Frustrated Magnet