Abstract
Practical control of polarization vortices in ferroelectric nanostructures could plays an important role in next-generation nanoscale electronic devices. However, switching vortex polarization is quite challenging, never mind via mechanical methods. This study identifies deterministic switching of vortex chirality in a compositionally graded ferroelectric nanoplate under compressive stress, using phase-field simulations and ferroelectric instability analysis. In addition, the underlying mechanism for such vortex control is explored. These results are tantalizing for nonvolatile memory and oxide electronics.
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