Yin‐Lian Zhu

Chinese Academy of Sciences

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Xiuliang Ma

Chinese Academy of Sciences

103

Yun‐Long Tang

Chinese Academy of Sciences

Yujia Wang

Liaoning Shihua University

Min‐Jie Zou

Songshan Lake Materials Laboratory

Wan‐Rong Geng

Songshan Lake Materials Laboratory

Mengjiao Han

Songshan Lake Materials Laboratory

Yanpeng Feng

Qingdao University

Bo Wu

Minzu University of China

Ying Liu

Chongqing University

Yuan Ping Feng

North University of China

Cooperative Institutions

Chinese Academy of Sciences

157

University of Science and Technology of China

University of Chinese Academy of Sciences

Institute of Physics

Southern University of Science and Technology

Zhejiang University

Tsinghua University

Harbin Institute of Technology

Lanzhou University of Technology

Centre National de la Recherche Scientifique

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Tunability of vortex-like patterns on 180o domain walls in ferroelectric PbTiO3

Philosophical Magazine Letters (2018)

Yixiao Jiang Yujia Wang D. Chen Yin‐Lian Zhu Xiuliang Ma

Vortices and antivortices are topological defects that could be exploited in high-density storage devices. Using first-principles calculations, we found vortex-like patterns around charged domain walls that are closely related to the tilt angles of charged 180° domain walls relative to the [100] direction. With decreasing tilt angle, the vortex-like patterns evolve from independent antivortices to vortex-antivortex pairs, and then to the inexistence of vortex or antivortex defects. These findings might promote to understand the atomic scale structures of 180° domain walls and open a new pathway to manipulating vortex structures to obtain novel properties.

Domain wall (magnetism)

Atomic units

10.1080/09500839.2018.1536834

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Citations (1)

Periodic arrays of flux-closure domains in ferroelectric thin films with oxide electrodes

Applied Physics Letters (2017)

S. Li Yin‐Lian Zhu Yujia Wang Yun‐Long Tang Ying Liu

Flux-closure domain structures in ferroelectric thin films are considered to have potential applications in electronic devices. It is usually believed that these structures are stabilized by the depolarization field and the contact with electrodes tends to screen the depolarization field and may limit their formation. In this work, the influence of oxide electrodes (SrRuO3 and La0.7Sr0.3MnO3) on the formation of flux-closure domains in PbTiO3 thin films deposited on (110)-oriented GdScO3 substrates by pulsed laser deposition was investigated by Cs-corrected transmission electron microscopy. It is found that periodic flux-closure domain arrays can be stabilized in PbTiO3 films when the top and bottom electrodes are symmetric, while a/c domains appear when asymmetric electrodes are applied. The influence of asymmetric electrodes on the domain configuration is proposed to have a connection with their different work functions and conductivity types. These results are expected to shed light on understanding the nature of flux-closure domains in ferroelectrics and open some research possibilities, such as the evolution of these structures under external electric fields.

Pulsed Laser Deposition

10.1063/1.4996232

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Citations (41)

Significant photovoltaic enhancement in La-doped BiFeO3 achieved by engineering crystallographic facet arrays

Scripta Materialia (2022)

Nan Liu Yi Cao Yun‐Long Tang Yin‐Lian Zhu Yujia Wang

Facet (psychology)

Photocurrent

10.1016/j.scriptamat.2022.114961

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Citations (2)

Misfit Strain Relaxation by Secondary Phase Formation in Multiferroic BiFeO₃ Epitaxial Thin Films

MRS Proceedings (2009)

Xue Wang Yin‐Lian Zhu Xiuliang Ma Can Wang Huibin Lü

10.1557/proc-1199-f03-48

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Citations (0)

Robust ferromagnetism in a cubic perovskite oxide with Curie temperature above 600 K

Cell Reports Physical Science (2023)

Jiaqi Liu Yun‐Long Tang Yi Cao Yin‐Lian Zhu Yujia Wang

Superexchange

Magnetism

Ferrimagnetism

Stoichiometry

10.1016/j.xcrp.2022.101235

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Citations (7)

Atomic mapping of structural distortions in 109° domain patterned BiFeO₃ thin films

Journal of materials research/Pratt's guide to venture capital sources (2017)

Wenyuan Wang Yin‐Lian Zhu Yun‐Long Tang Mengjiao Han Yujia Wang

10.1557/jmr.2017.206

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Citations (8)

Polar Bloch points in strained ferroelectric films

Nature Communications (2024)

Yujia Wang Y. P. Feng Yun‐Long Tang Yin‐Lian Zhu Yi Cao

Abstract Topological domain structures have drawn great attention as they have potential applications in future electronic devices. As an important concept linking the quantum and classical magnetism, a magnetic Bloch point, predicted in 1960s but not observed directly so far, is a singular point around which magnetization vectors orient to nearly all directions. Here we show polar Bloch points in tensile-strained ultrathin ferroelectric PbTiO 3 films, which are alternatively visualized by phase-field simulations and aberration-corrected scanning transmission electron microscopic imaging. The phase-field simulations indicate local steady-state negative capacitance around the Bloch points. The observation of polar Bloch points and their emergent properties consequently implies novel applications in future integrated circuits and low power electronic devices.

Magnetism

Bloch wave

10.1038/s41467-024-48216-1

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Citations (6)

Origin of the Bloch-type polarization components at the 180° domain walls in ferroelectric PbTiO3

Journal of Applied Physics (2014)

Yujia Wang D. Chen Y. L. Tang Yin‐Lian Zhu Xiuliang Ma

Determination of atomic and electronic structures of ferroelectric domain walls is crucial to understand and explore their unusual properties. Using first-principles calculations based on the density functional theory, we explored the atomic and electronic structures of 180° domain walls in PbTiO3, in order to understand the origin of Bloch-type polarization components. It is found that Bloch-type polarization components originate from the large displacements of Pb atoms and the Pb-O hybridization at the domain walls. The development of Bloch-type polarization components significantly reduce the domain wall energies and change the Peierls barriers of domain wall motion in different orientations.

Domain wall (magnetism)

Bloch wave

10.1063/1.4904192

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Citations (23)

3D polarization texture of a symmetric 4-fold flux closure domain in strained ferroelectric PbTiO₃ films

Journal of materials research/Pratt's guide to venture capital sources (2016)

Yun‐Long Tang Yin‐Lian Zhu Zijian Hong Eugene A. Eliseev Anna N. Morozovska

10.1557/jmr.2016.259

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Citations (14)

Shape and Surface Charge Modulation of Topological Domains in Oxide Multiferroics

The Journal of Physical Chemistry C (2019)

Mengjiao Han Yujia Wang Yun‐Long Tang Yin‐Lian Zhu Jinyuan Ma

Topological defects showing exotic properties and diverse functionalities provide us a potential utilization in nanoscale electronic devices. However, the formation mechanism and density manipulation of topological defects such as center-type domains which are crucial for applications remain elusive. Usually, these center-type domains are generated by applying external electric fields in ferroelectrics. In contrast, here we have prepared high-density center-divergent domains in BiFeO3 as self-assembled nanoislands deposited on both Nb- and Fe-doped SrTiO3 substrates. The size and density of these domains can be easily manipulated by varying doping level in substrates. The panorama polar configurations of the center-divergent domains are revealed by piezoresponse force microscopy and Cs-corrected scanning transmission electron microscopy. Phase-field simulations prove that both the surface charge accumulation and the shape of the nanoislands take great effect in the formation of center-type domains. The controllable growth of the nanoislands offers us a promising way to acquire high-density nanoscale nonvolatile memories.

Piezoresponse force microscopy

Topological defect

Scanning Force Microscopy

Charge density

Center (category theory)

10.1021/acs.jpcc.8b10678

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Citations (25)