Journal of Advanced Dielectrics, Volume. 12, Issue 4, 2250009(2022)

Hierarchical-vortex polarization domain pattern in nano polycrystalline ferroelectric

Zhiyong Huang1,2, Qinan Li1, Yin Liang3, Xiaoqiao He4, Jiagang Wu5, Haidong Fan2, and Xiaobao Tian2、*
Author Affiliations
  • 1School of Aeronautics and Astronautics, Sichuan University, Chengdu 610065, P. R. China
  • 2Department of Mechanics, Sichuan University, Chengdu 610065, P. R. China
  • 3Department of Civil Engineering, Sichuan University, Chengdu 610065, P. R. China
  • 4Department of Architecture and Civil Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
  • 5Department of Materials Science, Sichuan University, Chengdu 610065, P. R. China
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    Domain pattern is the carrier of electromechanical property. A novel domain pattern will open a gate for ferroelectric nanodevice. A distinctive topological domain pattern termed as hierarchical vortex (Hvo) has been found in polycrystalline ferroelectric based on the first-principles-based atomistic method. The Hvo pattern displays a unique structure, which is a flux-closing vortex encircle an anti-vortex or a vortex and anti-vortex pair (VA). Each Hvo structure could be regarded as a single vortex to forming a vortex–anti-vortex pair with anti-vortex or forming a vortex–vortex array with the vortex. The mechanism of HVo obtained in polycrystalline ferroelectric has been found that the grain boundary (GB) equals the domain wall when the first-order vortex is in the vortex. The HVo will open a new view of the domain topology pattern and its evolution.Domain pattern is the carrier of electromechanical property. A novel domain pattern will open a gate for ferroelectric nanodevice. A distinctive topological domain pattern termed as hierarchical vortex (Hvo) has been found in polycrystalline ferroelectric based on the first-principles-based atomistic method. The Hvo pattern displays a unique structure, which is a flux-closing vortex encircle an anti-vortex or a vortex and anti-vortex pair (VA). Each Hvo structure could be regarded as a single vortex to forming a vortex–anti-vortex pair with anti-vortex or forming a vortex–vortex array with the vortex. The mechanism of HVo obtained in polycrystalline ferroelectric has been found that the grain boundary (GB) equals the domain wall when the first-order vortex is in the vortex. The HVo will open a new view of the domain topology pattern and its evolution.

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    Zhiyong Huang, Qinan Li, Yin Liang, Xiaoqiao He, Jiagang Wu, Haidong Fan, Xiaobao Tian. Hierarchical-vortex polarization domain pattern in nano polycrystalline ferroelectric[J]. Journal of Advanced Dielectrics, 2022, 12(4): 2250009

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    Paper Information

    Category: Research Articles

    Received: Apr. 22, 2022

    Accepted: May. 13, 2022

    Published Online: Sep. 20, 2022

    The Author Email: Tian Xiaobao (xbtian@scu.edu.cn)

    DOI:10.1142/S2010135X22500096

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