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| 1 | Characterization of domain distributions by second harmonic generation in ferroelectrics显示文摘Domain orientations and their volume ratios in ferroelectrics are recognized as a compelling topic recently for domain switching dynamics and domain stability in devices application.Here,an optimized second harmonic generation method has been explored for ferroelectric domain characterization.Combing a unique theoretical model with azimuth-polarization-dependent second harmonic generation response,the complex domain components and their distributions can be rigidly determined in ferroelectric thin films.Using the proposed model,the domain structures of rhombohedral BiFeO_(3) films with 71°and 109°domain wall,and,tetragonal BiFeO_(3),Pb(Zr_(0.2)Ti_(0.8))O_(3),and BaTiO_(3) ferroelectric thin films are analyzed and the corresponding polarization variants are determined.This work could provide a powerful and all-optical method to track and evaluate the evolution of ferroelectric domains in the ferroelectric-based devices. | Yuan Zhang Yi Zhang Quan Guo Xiangli Zhong Yinghao Chu Haidong Lu Gaokuo Zhong Jie Jiang Congbing Tan Min Liao Zhihui Lu Dongwen Zhang Jinbin Wang Jianmin Yuan Yichun Zhou | 2018 | npj Computational Materials2018，，1： | 1 |
| 2 | Author Correction: Characterization of domain distributions by second harmonic generation in ferroelectrics显示文摘Correction to:npj Computational Materials https://doi.org/10.1038/s41524-018-0095-6,published online 24 July 2018 In this article the affiliation details for author Yinghao Chu were incorrectly given as‘Department of Materials Science and Engineering,National Chiao Tung University,30010 Hsinchu,Taiwan’but should have been‘Department of Materials Science and Engineering,National Chiao Tung University,30010 Hsinchu,Taiwan,China’.The original article has been corrected. | Yuan Zhang Yi Zhang Quan Guo Xiangli Zhong Yinghao Chu Haidong Lu Gaokuo Zhong Jie Jiang Congbing Tan Min Liao Zhihui Lu Dongwen Zhang Jinbin Wang Jianmin Yuan Yichun Zhou | 2023 | npj Computational Materials2023，，1： | 0 |
| 3 | Electrically driven motion, destruction, and chirality change of polar vortices in oxide superlattices显示文摘Topological polar vortices, which are electric analogs of magnetic objects, present great potential in applications of future nanoelectronics because of their nanometer size, anomalous dielectric response, and chirality. To enable the functionalities, it is prerequisite to manipulate the polar states and chirality by using external stimuli. Here, we probe the evolutions of polar state and chirality evolutions of topological polar vortices in Pb TiO;/Sr TiO;superlattices under an electric field by using atomically resolved in situ scanning transmission electron microscopy and phase-field simulations. We find that, under electric field, the chiral vortex cores can be moved laterally to form close-pair structures, transform into a/c domain stripes, and finally become a nonchiral c-domain. Such transition is reversible and spontaneous after bias removal. Interestingly, during switching and backswitching events, the vortex rotation can be changed, offering a potential strategy to manipulate vortex chirality. The revealed dynamic behavior of individual polar vortices at the atomic scale provides fundamentals for future device applications. | Pan Chen Congbing Tan Zhexin Jiang Peng Gao Yuanwei Sun Lifen Wang Xiaomei Li Ruixue Zhu Lei Liao Xu Hou Ke Qu Ning Li Xiaomin Li Zhi Xu Kaihui Liu Wenlong Wang Jinbin Wang Xiaoping Ouyang Xiangli Zhong Jie Wang Xuedong Bai | 2022 | Science China(Physics,Mechanics & Astronomy)2022，65，3： | 0 |
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