Acta Physica Sinica, Volume. 69, Issue 12, 127702-1(2020)

Polar topological structures in ferroelectric materials

Cong-Bing Tan1,2, Xiang-Li Zhong2, and Jin-Bin Wang2、*
Author Affiliations
  • 1School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, China
  • 2School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China
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    Spin topologies, including flow-closure, vortex, meron, skyrmion and other spin configurations, are usually found in magnetic materials. The emergence of the topological structures will trigger a number of intriguing functionalities and physical properties. Recent studies have shown that the trival domain structures can be transformed into polar topological domain structures under certain boundary conditions, such as size-confining, interfacial coupling, and epitaxial strain. In this paper, we review the observations of polar topologies and their formation mechanism in ferroelectric nanoparticles, thin films, and superlattice films, and focus on the intriguing properties, including ferroelectric, piezoelectric, dielectric, and photoelectric performances, which arise from the formation of polar topologies. We also review the highlights of recent studies of the manipulations and evolutions of polar topologies under the external field loading in ferroelectric materials. Finally, the future research directions of polar topological structure and potential application directions are proposed.

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    Cong-Bing Tan, Xiang-Li Zhong, Jin-Bin Wang. Polar topological structures in ferroelectric materials[J]. Acta Physica Sinica, 2020, 69(12): 127702-1

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    Paper Information

    Received: Feb. 28, 2020

    Accepted: --

    Published Online: Dec. 8, 2020

    The Author Email:

    DOI:10.7498/aps.69.20200311

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