TY - JOUR
T1 - Phase-field simulations of vortex chirality manipulation in ferroelectric thin films
AU - Liu, Di
AU - Wang, Jing
AU - Jafri, Hasnain Mehdi
AU - Wang, Xueyun
AU - Shi, Xiaoming
AU - Liang, Deshan
AU - Yang, Chao
AU - Cheng, Xingwang
AU - Huang, Houbing
N1 - Publisher Copyright:
© 2022, The Author(s).
PY - 2022/12
Y1 - 2022/12
N2 - The ferroelectric chiral vortex domains are highly desirable for the application of data storage devices with low-energy consumption and high-density integration. However, the controllable switching of vortex chirality remains a challenge in the current ferroelectric community. Utilizing phase-field simulations, we investigate the vortex domain evolution and chirality formation in BiFeO3 thin films. By applying local surface charge or electric field, we demonstrate that the vorticity and the polarity can be manipulated by the initial bi-domain arrangement and the external field with different directions, respectively. By exchanging the domain arrangements, the opposite chirality can be obtained. Importantly, the topological vortex domain is retained after removing the external field. The vortex chirality can be switched reversibly with high reproducibility, which is beneficial to fatigue tolerance of the material in the operation. These results provide theoretical guidance for manipulating the vortex chirality in ferroelectric films.
AB - The ferroelectric chiral vortex domains are highly desirable for the application of data storage devices with low-energy consumption and high-density integration. However, the controllable switching of vortex chirality remains a challenge in the current ferroelectric community. Utilizing phase-field simulations, we investigate the vortex domain evolution and chirality formation in BiFeO3 thin films. By applying local surface charge or electric field, we demonstrate that the vorticity and the polarity can be manipulated by the initial bi-domain arrangement and the external field with different directions, respectively. By exchanging the domain arrangements, the opposite chirality can be obtained. Importantly, the topological vortex domain is retained after removing the external field. The vortex chirality can be switched reversibly with high reproducibility, which is beneficial to fatigue tolerance of the material in the operation. These results provide theoretical guidance for manipulating the vortex chirality in ferroelectric films.
UR - https://www.scopus.com/pages/publications/85127124706
U2 - 10.1038/s41535-022-00444-8
DO - 10.1038/s41535-022-00444-8
M3 - Article
AN - SCOPUS:85127124706
SN - 2397-4648
VL - 7
JO - npj Quantum Materials
JF - npj Quantum Materials
IS - 1
M1 - 34
ER -