Field induced 360° domain wall motion in curved nanowires

360° magnetic domain walls hold significant application potential in spintronic devices due to their intrinsic non-volatile nature and low energy loss. However, their topology symmetry leads to the cancellation of the external driving forces within conventional straight nanowires, thereby preventing controlled directional propagation and positioning. To solve this problem, we propose a strategy that incorporates a curved nanowire with a rotating magnetic field to demonstrate the feasibility of controlling a 360° domain wall. The curved geometry establishes an asymmetric energy landscape through the coupling between geometric chirality and the intrinsic chirality of the domain wall. This enables the controlled generation and step-by-step propagation of the 360° domain wall, as well as its precise positioning at the corners by tuning the magnetic field parameters to selectively match distinct energetic thresholds, thereby achieving the logical functionality. To demonstrate this functionality, we propose a novel design of a non-volatile shift register that utilizes phase-field modeling and micromagnetic simulations to successfully realize the deterministic writing and erasing of logic “1” and “0” states. This work establishes a design paradigm governed by geometric curvature for domain wall dynamics, providing a new path for current-free, non-volatile spintronic devices.