Boundary conditions manipulation of polar vortex domains in BiFeO3 membranes via phase-field simulations
Abstract
Polar vortex domains have recently become an emergent research field due to the abundant physical phenomena and potential applications in high-density memories. Here, we explore the mechanisms of creating polar vortex domains in the BiFeO3 (BFO) membranes subjected to different boundary conditions using phase-field simulations. A major difference is that the vortex in membrane can be stabilized even under short-circuit electrical boundary conditions compared to vortex in other systems, such as thin film or superlattice. We found that (a) the formation of polar vortex domains at the membrane interior under bending is mainly driven by the reduction of elastic energy under short-circuit boundary condition, and the vortex chirality (namely, clockwise and counterclockwise) could be identified by n-shape and u-shape bending; (b) in the unbent open-circuit BFO membrane case, exotic trapezoid-shaped vortex nanodomains form at the terminations of 109 degrees domain walls (DWs) and partially charged 71 degrees DWs, which is driven by the local depolarization field and the interplay among electrostatic, elastic, and gradient and Landau energies. We also examine Kittel's law by establishing the dependence of vortex periods on the membrane thickness. Furthermore, these results give further understanding of the effect of boundary conditions on the formation of polarmore »
- Authors:
-
[1];
[1];
[1]
- Xi'an Jiaotong Univ. (China)
- Pennsylvania State Univ., University Park, PA (United States)
- Publication Date:
- Research Org.:
- Pennsylvania State Univ., University Park, PA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Key Research and Development Program of China; Natural Science Foundation of China; Natural Science Foundation of Shanxi Province; China Postdoctoral Science Foundation
- OSTI Identifier:
- 1823600
- Alternate Identifier(s):
- OSTI ID: 1880791
- Grant/Contract Number:
- SC0020145
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Physics. D, Applied Physics
- Additional Journal Information:
- Journal Volume: 54; Journal Issue: 49; Journal ID: ISSN 0022-3727
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; BiFeO3; ferroelectric membrane; polar vortex domains; phase-field simulations
Citation Formats
Peng, Ren-Ci, Cheng, Xiaoxing, Peng, Bin, Zhou, Ziyao, Chen, Long-Qing, and Liu, Ming. Boundary conditions manipulation of polar vortex domains in BiFeO3 membranes via phase-field simulations. United States: N. p., 2021.
Web. doi:10.1088/1361-6463/ac2112.
Peng, Ren-Ci, Cheng, Xiaoxing, Peng, Bin, Zhou, Ziyao, Chen, Long-Qing, & Liu, Ming. Boundary conditions manipulation of polar vortex domains in BiFeO3 membranes via phase-field simulations. United States. https://doi.org/10.1088/1361-6463/ac2112
Peng, Ren-Ci, Cheng, Xiaoxing, Peng, Bin, Zhou, Ziyao, Chen, Long-Qing, and Liu, Ming. Mon .
"Boundary conditions manipulation of polar vortex domains in BiFeO3 membranes via phase-field simulations". United States. https://doi.org/10.1088/1361-6463/ac2112. https://www.osti.gov/servlets/purl/1823600.
@article{osti_1823600,
title = {Boundary conditions manipulation of polar vortex domains in BiFeO3 membranes via phase-field simulations},
author = {Peng, Ren-Ci and Cheng, Xiaoxing and Peng, Bin and Zhou, Ziyao and Chen, Long-Qing and Liu, Ming},
abstractNote = {Polar vortex domains have recently become an emergent research field due to the abundant physical phenomena and potential applications in high-density memories. Here, we explore the mechanisms of creating polar vortex domains in the BiFeO3 (BFO) membranes subjected to different boundary conditions using phase-field simulations. A major difference is that the vortex in membrane can be stabilized even under short-circuit electrical boundary conditions compared to vortex in other systems, such as thin film or superlattice. We found that (a) the formation of polar vortex domains at the membrane interior under bending is mainly driven by the reduction of elastic energy under short-circuit boundary condition, and the vortex chirality (namely, clockwise and counterclockwise) could be identified by n-shape and u-shape bending; (b) in the unbent open-circuit BFO membrane case, exotic trapezoid-shaped vortex nanodomains form at the terminations of 109 degrees domain walls (DWs) and partially charged 71 degrees DWs, which is driven by the local depolarization field and the interplay among electrostatic, elastic, and gradient and Landau energies. We also examine Kittel's law by establishing the dependence of vortex periods on the membrane thickness. Furthermore, these results give further understanding of the effect of boundary conditions on the formation of polar vortex domains, guiding experimental designs of vortex-based high-density memories.},
doi = {10.1088/1361-6463/ac2112},
journal = {Journal of Physics. D, Applied Physics},
number = 49,
volume = 54,
place = {United States},
year = {Mon Sep 13 00:00:00 EDT 2021},
month = {Mon Sep 13 00:00:00 EDT 2021}
}
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