Engineering and Technology

Phase-field simulations of vortex chirality manipulation in ferroelectric thin films

D. Liu, J. Wang, et al.

This research by Di Liu, Jing Wang, Hasnain Mehdi Jafri, Xueyun Wang, Xiaoming Shi, Deshan Liang, Chao Yang, Xingwang Cheng, and Houbing Huang delves into vortex domain evolution and chirality formation in BiFeO₃ thin films. The study reveals how local surface charge or electric fields can control vortex chirality, demonstrating reversible switching and potential fatigue tolerance.

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Abstract

Utilizing phase-field simulations, this research investigates vortex domain evolution and chirality formation in BiFeO₃ thin films. The study demonstrates controllable switching of vortex chirality using local surface charge or electric fields, showing that bi-domain arrangements determine in-plane vorticity and chirality, while the external field manipulates polarity. Reversible chirality switching with high reproducibility is achieved, highlighting the potential for fatigue tolerance. These findings provide theoretical guidance for manipulating vortex chirality in ferroelectric films.

Publisher

npj Quantum Materials

Published On

Mar 24, 2022

Authors

Di Liu, Jing Wang, Hasnain Mehdi Jafri, Xueyun Wang, Xiaoming Shi, Deshan Liang, Chao Yang, Xingwang Cheng, Houbing Huang

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