Observation of one-dimensional, charged domain walls in ferroelectric ZrO2.
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| Title: | Observation of one-dimensional, charged domain walls in ferroelectric ZrO |
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| Authors: | Zhong, Hai (AUTHOR), Wang, Shiyu (AUTHOR), Zhang, Qinghua (AUTHOR), Liu, Zhuohui (AUTHOR), Xie, Donggang (AUTHOR), Lu, Jiali (AUTHOR), Jin, Shifeng (AUTHOR), Zhang, Shufang (AUTHOR), Guo, Er-jia (AUTHOR), He, Meng (AUTHOR), Wang, Can (AUTHOR), Gu, Lin (AUTHOR), Yang, Guozhen (AUTHOR), Jin, Kui-juan (AUTHOR), Ge, Chen (AUTHOR) |
| Source: | Science. 1/22/2026, Vol. 391 Issue 6783, p407-411. 5p. |
| Subjects: | Zirconium oxide, Ferroelectric crystals, Dimensional analysis, Electric field effects, Nanoscience |
| Abstract: | Ferroelectric charged domain walls (CDWs) with nanoscale thickness and bound charges are typically viewed as ultrathin, reconfigurable, and highly conductive two-dimensional components for domain wall nanoelectronics. Dimensional confinement of such polar topological structures has the potential to increase device density and unlock novel functionalities. We report 180° head-to-head and tail-to-tail CDWs exhibiting one-dimensional (1D) characteristics. These 1D CDWs are confined within the polar layers of ferroelectric ZrO2 and have atomic-scale dimensions in both width and thickness. Quantitative analysis unveils a distinct screening mechanism of these walls whereby bound polarization charges are compensated by self-balancing oxygen occupancy. We demonstrate electric field–driven manipulation of these 1D CDWs, revealing the microscopic coupling between polarization switching and oxygen-ion transport. Editor's summary: Freestanding ferroelectric zirconium dioxide thin films exhibit one-dimensional charged domain walls (1D CDWs) with head-to-head and tail-to-tail polarization. Zhong et al. imaged these 5-nanometer films and found that an alternating arrangement of nonpolar and polar oxygen ions formed 2D polar sheets that confined the 1D CDWs. Electric-field manipulation of these domain walls led to transport of oxygen ions. —Phil Szuromi [ABSTRACT FROM AUTHOR] |
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| Database: | Psychology and Behavioral Sciences Collection |
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| Abstract: | Ferroelectric charged domain walls (CDWs) with nanoscale thickness and bound charges are typically viewed as ultrathin, reconfigurable, and highly conductive two-dimensional components for domain wall nanoelectronics. Dimensional confinement of such polar topological structures has the potential to increase device density and unlock novel functionalities. We report 180° head-to-head and tail-to-tail CDWs exhibiting one-dimensional (1D) characteristics. These 1D CDWs are confined within the polar layers of ferroelectric ZrO2 and have atomic-scale dimensions in both width and thickness. Quantitative analysis unveils a distinct screening mechanism of these walls whereby bound polarization charges are compensated by self-balancing oxygen occupancy. We demonstrate electric field–driven manipulation of these 1D CDWs, revealing the microscopic coupling between polarization switching and oxygen-ion transport. Editor's summary: Freestanding ferroelectric zirconium dioxide thin films exhibit one-dimensional charged domain walls (1D CDWs) with head-to-head and tail-to-tail polarization. Zhong et al. imaged these 5-nanometer films and found that an alternating arrangement of nonpolar and polar oxygen ions formed 2D polar sheets that confined the 1D CDWs. Electric-field manipulation of these domain walls led to transport of oxygen ions. —Phil Szuromi [ABSTRACT FROM AUTHOR] |
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| ISSN: | 00368075 |
| DOI: | 10.1126/science.aeb7280 |
