Abstract
AbstractMagnetic vortex, a flux‐closure spin configuration, has shown potential in future high‐density, low‐power magnetic memories due to their nanoscale size and exotic magneto‐electrical transport properties. Although magnetic vortex can be manipulated by various external stimuli in a controllable way, an electrical field‐induced nonvolatile and deterministic reversal rotation of magnetic vortex is yet to be experimentally established. In this work, electrical field‐induced deterministic reversible rotation of a magnetic vortex is realized based on an epitaxial γ ′‐Fe4N/0.7PbMg1/3Nb2/3O3‐0.3PbTiO3 multiferroic heterostructure. This rotation is nonvolatile and can be triggered by the electric‐field pulse. More importantly, it does not require an assistant magnetic field. Combined experiments and theoretical simulations reveal that the rotation of magnetic vortex originates from the strain‐mediated reorientation of the in‐plane magnetic anisotropy. The results provide an additional degree of freedom for manipulating magnetic vortex, which can open new doors for constructing magnetic vortex‐based memory devices.
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