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Title: Nanoscale bubble domains with polar topologies in bulk ferroelectrics
Authors: Yin, Jie
Zong, Hongxiang
Tao, Hong
Tao, Xuefei
Wu, Haijun 
Zhang, Yang
Zhao, Li-Dong
Ding, Xiangdong
Sun, Jun
Zhu, Jianguo
Wu, Jiagang
Pennycook, Stephen J. 
Issue Date: 15-Jun-2021
Publisher: Nature Research
Citation: Yin, Jie, Zong, Hongxiang, Tao, Hong, Tao, Xuefei, Wu, Haijun, Zhang, Yang, Zhao, Li-Dong, Ding, Xiangdong, Sun, Jun, Zhu, Jianguo, Wu, Jiagang, Pennycook, Stephen J. (2021-06-15). Nanoscale bubble domains with polar topologies in bulk ferroelectrics. Nature Communications 12 (1) : 3632. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: Multitudinous topological configurations spawn oases of many physical properties and phenomena in condensed-matter physics. Nano-sized ferroelectric bubble domains with various polar topologies (e.g., vortices, skyrmions) achieved in ferroelectric films present great potential for valuable physical properties. However, experimentally manipulating bubble domains has remained elusive especially in the bulk form. Here, in any bulk material, we achieve self-confined bubble domains with multiple polar topologies in bulk Bi0.5Na0.5TiO3 ferroelectrics, especially skyrmions, as validated by direct Z-contrast imaging. This phenomenon is driven by the interplay of bulk, elastic and electrostatic energies of coexisting modulated phases with strong and weak spontaneous polarizations. We demonstrate reversable and tip-voltage magnitude/time-dependent donut-like domain morphology evolution towards continuously and reversibly modulated high-density nonvolatile ferroelectric memories. © 2021, The Author(s).
Source Title: Nature Communications
ISSN: 2041-1723
DOI: 10.1038/s41467-021-23863-w
Rights: Attribution 4.0 International
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