Article
Materials Science, Ceramics
Bu Hang Chen, Tu Lai Sun, Li Yu Wei, Xiao Qiang Liu, Wen Wen, He Tian, Jiang Yu Li, Xiang Ming Chen
Summary: Fe/Nb cosubstitution in Ca3Mn2O7 enables easy polarization switching at room temperature, achieving a distinct ferroelectric domain morphology without intermediate nonpolar phases. The enhanced ferroelectric polarization is attributed to increased anti-ferrodistortive displacements of Ca cations due to larger amplitudes of oxygen octahedral distortions, emphasizing the role of chemical pressure in tuning phase transition and ferroelectric characteristics.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Optics
Dongyang Yang, Jingda Wu, Benjamin T. Zhou, Jing Liang, Toshiya Ideue, Teri Siu, Kashif Masud Awan, Kenji Watanabe, Takashi Taniguchi, Yoshihiro Iwasa, Marcel Franz, Ziliang Ye
Summary: It is shown that rhombohedral stacked MoS2 can enable scalable photovoltaic effects induced by spontaneous polarization throughout few-micrometre-sized exfoliated flakes. This is exploited in a graphene-MoS2-based photovoltaic device. Stacking order in van der Waals materials determines the coupling between atomic layers and is therefore the key to materials' properties. Recently, ferroelectricity, a phenomenon exhibiting reversible spontaneous electrical polarization, has been observed in zero-degree aligned van der Waals structures. In these artificial stacks, the single-domain size is limited by angle misalignment. Here we show that naturally rhombohedrally stacked MoS2 can host a homogeneous spontaneous polarization throughout the exfoliated flakes, free of misalignment.
Article
Materials Science, Multidisciplinary
Jian Fu, Zide Yu, Aiwen Xie, Ziyi Yu, Zhengqian Fu, Xuewen Jiang, Tianyu Li, Ruzhong Zuo
Summary: In this study, in-situ synchrotron x-ray diffraction and transmission electron microscopy were conducted to investigate the structural mechanism of BF-PT-0.19Ba(Zr,Ti)O3 high-temperature piezoceramic. It was found that an irreversible transition from tetragonal phase (T phase) to rhombohedral phase (R phase) occurred after poling, leading to significantly enhanced irreversible domain switching of both R and T phases. This study provides a new mechanism for designing high-performance high-temperature piezoelectric ceramics.
Article
Chemistry, Physical
Shaowen Xu, Fanhao Jia, Guodong Zhao, Tao Hu, Shunbo Hu, Wei Ren
Summary: By using density functional theory calculations, we identified the presence of ferromagnetism orders and insulator-metal phase transition in bilayer KNbO3 and KTaO3, which can contribute to the applications of few-layer transition-metal oxide perovskites in emerging spintronics and straintronics.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Tian Gan, Zhe-Kun Xu, Jia-Qi Gan, Zhong-Xia Wang
Summary: Fluorine substitution is an effective method to construct high-performance molecular phase transition materials, enabling structural dimension engineering and high-temperature phase transition properties. In this study, (R-3-FPD)PbBr3 and (3,3-DFPD)(2)PbBr4 were successfully synthesized by fluorine substitution, exhibiting different crystal structures and phase transition characteristics.
Article
Chemistry, Multidisciplinary
Chao Xin, Bingqian Song, Yaohui Yin, Ai Wang, Zhixin Sun, Guangyong Jin, Yongli Song, Feng Pan
Summary: In this study, a novel mechanism was proposed to achieve two-dimensional monolayer multiferroic materials by inducing an out-of-plane electric polarization through non-equilibrium charge disproportionation in a Mo2NCl2 monolayer. This material exhibits a high magnetic critical temperature and the magnetic properties and electric behavior can be controlled by an external electric field.
Article
Multidisciplinary Sciences
Honglie Ning, Omar Mehio, Xinwei Li, Michael Buchhold, Mathias Driesse, Hengdi Zhao, Gang Cao, David Hsieh
Summary: Ultrafast laser excitation can reveal hidden ordered electronic states. We demonstrate a method to induce a dynamical transition from an allowed to a forbidden state by exciting a phonon strongly coupled to the order parameter. Anomalies in temperature, pump excitation fluence, and probe photon energy of the strongly coupled phonon manifest the dynamical transition.
NATURE COMMUNICATIONS
(2023)
Article
Physics, Applied
Lu Liu, Jing Chen, Xiao Li Zhu, Xiang Ming Chen
Summary: This study quantitatively investigated the structure evidence of the Pna2(1) phase and the field-induced transition of Pna2(1)/R3c in Bi1-xSmxFe0.99Ti0.01O3 ceramics, as well as the subsequent electric field-controlled magnetism. The reversible electric field-induced phase transition from Pna2(1) to R3c was observed near the morphotropic phase boundary at x=0.14, enhancing the magnetoelectric coupling in the materials.
APPLIED PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
He Qi, Liang Chen, Huajie Luo, Hui Liu, Shiqing Deng, Xianran Xing, Jun Chen
Summary: The study discovered a critical non-ergodic relaxor ferroelectric state, in which the polarization reorientation process in shape-memory ceramics occurs through polarization contraction/extension, providing guidance for the design of other lead-free ceramics with excellent shape-memory properties.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Physics, Applied
Thorsten Schneider, Juliette Cardoletti, Hui Ding, Mao-Hua Zhang, Tianshu Jiang, Marton Major, Philipp Komissinskiy, Leopoldo Molina-Luna, Lambert Alff
Summary: An antipolar phase and thickness-dependent properties were confirmed for NaNbO3 thin films grown on SrTiO3 (100) substrates by pulsed laser deposition. Characteristic 1/4 superlattice reflections revealed the antipolar displacement of Na and Nb ions. X-ray diffraction showed two different orientations of the same phase for films beyond a critical thickness, with an explanation based on extraordinary strain compensation mechanism. The polarization vs electric field behavior exhibited a thickness dependence, with a stabilized antiferroelectric phase for very thin films and field induced ferroelectric hysteresis for thicker films.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Inorganic & Nuclear
Jun-Chao Liu, Fang-Fang Di, Yi-Piao Zeng, Wu-Jia Chen, Xiao-Yun Huang, Yan-Ling Luo, Xuan Zhu, Lin Zhou, Yuan-Yuan Tang
Summary: In this study, an above-room-temperature host-guest inclusion ferroelastic crystal was successfully designed and the phase transition temperature and type were effectively controlled by replacing the anion. The ferroelastic domains of this crystal can be switched under thermal stimulus as well as rapidly switched in situ under external stress, suggesting its potential in dual-channel switches.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Physics, Multidisciplinary
Hui Sun, Jiaying Niu, Haiying Cheng, Yuxi Lu, Zirou Xu, Lei Zhang, Xiaobing Chen
Summary: The single-phase multiferroic Bi5Fe1-xNixTi3O15 ceramics were synthesized using a sol-gel auto-combustion method, with Ni substitution enhancing both ferroelectricity and magnetic properties. The BFNT-0.2 sample exhibited the best performance, with the improvement in magnetic properties attributed to the spin canting of Fe/Ni-O octahedra. X-ray photoelectron spectroscopy was used to investigate the influence of the valence state of magnetic ions on the properties, and structural, ferroelectric, and magnetic transitions were also examined.
Article
Multidisciplinary Sciences
H. Yamakawa, T. Miyamoto, T. Morimoto, N. Takamura, S. Liang, H. Yoshimochi, T. Terashige, N. Kida, M. Suda, H. M. Yamamoto, H. Mori, K. Miyagawa, K. Kanoda, H. Okamoto
Summary: Photoinduced phase transition is a central issue in the field of non-equilibrium quantum physics. The authors demonstrate that a terahertz electric-field pulse changes a Mott insulator of an organic molecular compound to a macroscopically polarized charge-order state.
NATURE COMMUNICATIONS
(2021)
Article
Multidisciplinary Sciences
Yi Liu, Yu Ma, Xi Zeng, Haojie Xu, Wuqian Guo, Beibei Wang, Lina Hua, Liwei Tang, Junhua Luo, Zhihua Sun
Summary: The lead-free halide double perovskite (CHMA)(2)CsAgBiBr7 with high-temperature antiferroelectric behaviors and excellent anti-breakdown property was successfully synthesized. The material exhibited high polarization and Curie temperature, and the dynamic motional ordering of the organic cation contributed to the high breakdown field strength and fatigue endurance. This study opens up possibilities for exploring new green candidates for anti-breakdown energy storage capacitors.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
Gang Liu, Huanghui Nie, Leiyang Zhang, Xinyu Zeng, Yazhong Zheng, Xinyu Chen, Xinran Wang, Kun Yu, Li Jin, Yan Yan
Summary: In the past decade, there has been a great deal of attention on acquiring giant electric field-induced strain in non-Pb materials. In this study, the crystal and domain structures, as well as the electrical performances of (1-x) (0.94Bi0.5Na0.5TiO3-0.06BaTiO3)-xNaTaO3 (BNBT-xNT) specimens, were systematically studied to achieve enhanced strain. The introduction of NT resulted in a phase structure transition from rhombohedral-tetragonal to pseudo-cubic structure, causing the destruction of the original domain structure of BNBT and an increase in the disorder degree of the local structure. Simultaneously, the remnant polarization, coercive field, and piezoelectric coefficients were significantly decreased. The BNBT-3NT ceramics achieved marked strain coefficients at room temperature, with a maximum strain of 0.394% under 65 kV/cm and a d33* of 606 pm/V.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Wei Li, Zhijun Xu, Ruiqing Chu, Jigong Hao, Peng Fu, Juan Du, Zhenxing Yue
Article
Engineering, Electrical & Electronic
Liangliang Li, Jigong Hao, Zhijun Xu, Wei Li, Ruiqing Chu
JOURNAL OF ELECTRONIC MATERIALS
(2018)
Article
Engineering, Electrical & Electronic
Lei Yu, Jigong Hao, Zhijun Xu, Wei Li, Ruiqing Chu
JOURNAL OF ELECTRONIC MATERIALS
(2017)
Article
Engineering, Electrical & Electronic
Zhe Wang, Wei Li, Ruiqing Chu, Jigong Hao, Zhijun Xu, Guorong Li
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2017)
Article
Engineering, Electrical & Electronic
Yan Zhao, Juan Du, Xiaokun Niu, Jigong Hao, Wei Li, Peng Fu, Zhijun Xu
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2018)
Article
Chemistry, Physical
Hongwei Shi, Yanping Zhu, Yongmin Zhao, Chang Liu, Xiaozhen Ren, Jigong Hao, Wei Li
JOURNAL OF ALLOYS AND COMPOUNDS
(2018)
Article
Engineering, Electrical & Electronic
Cen Liang, Jigong Hao, Wei Li, Juan Du, Peng Fu, Zhijun Xu, Ruiqing Chu, Zhicheng Guan
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2018)
Article
Materials Science, Multidisciplinary
Lei Yu, Jigong Hao, Zhijun Xu, Wei Li, Ruiqing Chu
MATERIALS CHEMISTRY AND PHYSICS
(2018)
Article
Materials Science, Multidisciplinary
Zhe Wang, Wei Li, Ruiqing Chu, Jigong Hao, Zhijun Xu, Guorong Li
MATERIALS RESEARCH BULLETIN
(2018)
Article
Materials Science, Ceramics
Cen Liang, Jigong Hao, Wei Li, Juan Du, Peng Fu, Chengchao Hu, Huaiyong Li, Zhijun Xu, Ruiqing Chu
CERAMICS INTERNATIONAL
(2019)
Article
Engineering, Electrical & Electronic
Lei Yu, Jigong Hao, Wei Li, Peng Fu, Wenzhi Sun, Chong Chen, Zhijun Xu, Ruiqing Chu
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2019)
Article
Materials Science, Multidisciplinary
Wenming Shi, Juan Du, Yuzhi Zhai, Chong Chen, Yanyan Wei, Wei Li, Jigong Hao, Peng Fu
JOURNAL OF MATERIALS SCIENCE
(2020)
Article
Materials Science, Ceramics
Mingze Sun, Juan Du, Chong Chen, Peng Fu, Peng Li, Jigong Hao, Zhenxing Yue, Wei Li
CERAMICS INTERNATIONAL
(2020)
Review
Engineering, Electrical & Electronic
Xuemin Fan, Peng Li, Juan Du, Chong Chen, Peng Fu, Jigong Hao, Zhenxing Yue, Wei Li
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2020)
Article
Materials Science, Multidisciplinary
Wei Li, Zhe Wang, Jigong Hao, Peng Fu, Juan Du, Ruiqing Chu, Zhijun Xu
JOURNAL OF MATERIALS CHEMISTRY C
(2018)