Article
Materials Science, Ceramics
Haochao Li, Wenyong Liao, Boyan Sun, Yuanhao Lu, Xingchen He, Ziting Xu, Chuanwei Huang, Zhenzhong Sun, Tao Li
Summary: Rare earth doping can enhance the piezoelectric performance of lead zinc niobate titanate crystals, but also introduces instability in phase transition temperature. In this study, high homogeneity Sm-doped Pb(Zn1/3Nb2/3)O3-5%PbTiO3 single crystals were successfully grown, and their local structure heterogeneity and piezoelectric properties were characterized by HRTEM and PFM techniques, respectively. The results demonstrate that Sm3+ doping enhances the local structural heterogeneity and has minimal effect on phase transition temperatures.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Hongrui Jia, Jiahao Mi, Zhen Li, Linghang Wang
Summary: In this study, Sm-doped Pb(Mg1/3Nb2/3)O-3-Pb(Zn1/3Nb2/3)-PbTiO3 ternary ferroelectric ceramics near MPB were successfully manufactured and investigated. The results showed that Sm doping can achieve a high piezoelectric coefficient and a high Curie temperature simultaneously, and the room temperature dielectric constant was greatly improved. These Sm-doped ceramics may have potential applications in high-performance piezoelectric devices.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Haotian Wan, Chengtao Luo, Chang Liu, Wei-Yi Chang, Yohachi Yamashita, Xiaoning Jiang
Summary: Poling silver-mode single crystals in an alternating current electric field significantly enhances their dielectric constant and piezoelectric coefficient, while also leading to domain morphology evolution.
Article
Physics, Applied
Zhen Wang, Jian Zhuang, Fei Li, Wei Ren, Zuo-Guang Ye, Nan Zhang
Summary: In this study, the local structural features and temperature dependence of PZN-15PT, a lead-based relaxor ferroelectric, were investigated using pair distribution function analysis and the reverse Monte Carlo method. The findings reveal that the ordered polar nanoregions (PNRs) originate from strong atomic displacive correlation, while the dipoles in the disordered matrix have weak correlations. These results provide a detailed understanding of the local structure of lead-based relaxor ferroelectrics and offer insights into the nature of PNRs.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Ceramics
Leilei Li, Junting Liu, Shuyao Cao, Jie Xu, Changying Wu, Emilia Pawlikowska, Mikolaj Szafran, Feng Gao
Summary: This study investigated the microstructure evolution and reaction mechanism between the matrix and plate-like PT template in PZNNT ceramics. It was found that the plate-like PT template decomposed at high temperatures and reacted with the PZNNT matrix, but did not contribute to grain growth orientation. The thermal stability of the plate-like template was identified as a key factor in fabricating textured piezoelectric ceramics.
CERAMICS INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
Yang Xiang, Chuanwen Chen, Liguo Tang, Lei Qin, Hongmei Zhu, Wenwu Cao
Summary: The study successfully determined the full set of material properties for single domain PZN-6.5%PT single crystals using a combination of ultrasonic pulse-echo method, resonance ultrasonic spectroscopy, and impedance analyzer with only one sample. This methodology shows advantages over traditional techniques and can facilitate fundamental studies in domain engineering and device design optimization.
SCRIPTA MATERIALIA
(2021)
Article
Chemistry, Physical
Yue Ming, Yanqi Cai, Qingguo Meng, Chao Yang, Da Huo, Jinhui Fan, Jian Zhang, Kai Li, Jiaming Li, Xudong Qi, Enwei Sun
Summary: Noncentrosymmetry ferroelectric materials coupled with switchable polarization have potential as candidates for photovoltaic applications due to their unique dissociation mechanism of photogenerated excitons associated with bulk polarization. In this study, we investigated the photovoltaic properties of the relaxor-based 24PIN-47PMN-29PT single crystals along various crystallographic orientations. Our results revealed a modulated photovoltaic response in the [111](c)-oriented crystal due to the polarization intensity difference. Additionally, we explored the domain configuration, phase structure, ferroelectric performance, and optical characteristics of the 24PIN-47PMN-29PT single crystals, providing insights into the origin of their anomalous photovoltaic effect. Our findings suggest that 24PIN-47PMN-29PT single crystals have the potential for applications in photovoltaic devices, photorefraction, and photorefractive optical applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Acoustics
Liao Qiao, Song Xia, Xiangyu Gao, Yangbin Liu, Kexin Song, Haisheng Guo, Zhuo Xu, Fei Li
Summary: The frequency dependence of coercive fields in [001]- and [011]-poled PIN-PMN-PT single crystals was studied, revealing that polarization orientation and frequency significantly impact the performance. [011]-poled crystals exhibited superior properties compared to [001]-poled crystals at the same frequencies.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2021)
Article
Physics, Applied
Haotian Wan, Chengtao Luo, Hwang-Pill Kim, Ching-Chang Chung, Wei-Yi Chang, Yohachi Yamashita, Xiaoning Jiang
Summary: By studying the overpoling effect of alternating current poling (ACP) on [001]-orientated PMN-0.26PT single crystals, it was found that ACP can significantly enhance the material properties when the poling cycle number is low. However, continuing ACP after saturation leads to a gradual decrease in dielectric and piezoelectric properties. XRD and PFM studies revealed changes in lattice symmetry and domain structure caused by the overpoling effect.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Hongli Wang, Kaiyang Zeng
Summary: The study showed that the increase in relative humidity leads to an increase in PFM amplitude and a decrease in coercive bias of ferroelectric hysteresis loops. These phenomena are attributed to the presence of a water layer between the probe tip and the sample surface, which affects the electric field distribution and screening properties at the ferroelectric sample surface.
Article
Materials Science, Multidisciplinary
Zhen Wang, Zheyi An, Jian Zhuang, Fei Li, Wei Ren, Zuo-Guang Ye, Nan Zhang
Summary: In this study, neutron atomic pair distribution function (PDF) analysis was used to investigate the local-structural features of relaxor-ferroelectric materials at low temperatures. The results revealed that the existence of polar nanoregions (PNRs) is characterized by strong displacement correlation rather than structural symmetry. This finding provides a better understanding of the high-performance piezoelectric properties of these materials.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Physics, Applied
Canhuang Hong, Zujian Wang, Bin Su, Lin Guo, Xiaoming Yang, Xifa Long, Chao He
Summary: The study demonstrates that combining alternating and direct current poling methods is a better poling strategy for enhancing the piezoelectric properties of ferroelectric crystals compared with separate DCP and ACP methods.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Physics, Applied
Yu Xiang, Yiqin Sun, Yohachi (John) Yamashita, Tomoaki Karaki, Hiroshi Maiwa
Summary: Piezoelectric properties and microstructures of polarized PMN-PT single crystals prepared by different poling methods were investigated. Different vertical and horizontal stripe microstructures were observed on the fracture surface of the crystals, depending on the direction of compressive and tensile stresses applied.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2023)
Article
Acoustics
Yiqin Sun, Yuhei Ota, Tadashi Fujii, Yohachi Yamashita, Hwang-Pill Kim, Haotian Wan, Xiaoning Jiang, Tomoaki Karaki
Summary: The effects of alternating current poling (ACP) on the properties of sliver mode vibrators made from Pb(Mg1/3Nb2/3)O-3-0.30PbTiO(3) (PMN-0.30PT) single crystal plate were investigated. It was found that ACP combined with postdicing direct current poling (ACP-DCP) can enhance the performance of the vibrators. These results are significant for the commercial application of ACP technology in medical imaging ultrasound probes.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2022)
Article
Materials Science, Ceramics
Hana Ursic, Uros Prah, Tadej Rojac, Anze Jazbec, Luka Snoj, Silvo Drnovsek, Andraz Bradesko, Anja Mirjanic, Marko Vrabelj, Barbara Malic
Summary: The high radiation tolerance of functional materials is crucial for their application in harsh environments. This study investigates the feasibility of using electrocaloric materials in applications with high neutron and gamma radiation. The results show that materials with relaxor behavior exhibit minimal degradation in functional properties, making them suitable for use in such harsh environments.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Jieqiong Chen, Rui Guo, Xiaowei Wang, Chao Zhu, Guiming Cao, Lu You, Ruihuan Duan, Chao Zhu, Shreyash Sudhakar Hadke, Xun Cao, Teddy Salim, Pio John S. Buenconsejo, Manzhang Xu, Xiaoxu Zhao, Jiadong Zhou, Ya Deng, Qingsheng Zeng, Lydia H. Wong, Jingsheng Chen, Fucai Liu, Zheng Liu
Summary: This study demonstrates a bifunctional memory device that can be programmed and erased by external stimuli, and its performance is enhanced by oxygen-vacancy-based solid-ionic gating. The device exhibits multibit electrical memory capability and a large dynamic range, and it can be programmed and erased using different wavelengths of light.
Article
Physics, Applied
Wenbo Ma, Shuai Yuan, Lele Ma, Yulan Liu, Biao Wang, Zuhuang Chen
Summary: Phase-field simulations were used to study domain structures in (001)-oriented PbZr0.4Ti0.6O3 epitaxial thin films. The results showed that the vortex-array state area in the phase diagram enlarges with the decrement of the depolarization field, which is contrary to the general view. A strain-mediated ferroelectric failure mechanism was also found.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Wanying Li, Yimeng Guo, Zhaoping Luo, Shuhao Wu, Bo Han, Weijin Hu, Lu You, Kenji Watanabe, Takashi Taniguchi, Thomas Alava, Jiezhi Chen, Peng Gao, Xiuyan Li, Zhongming Wei, Lin-Wang Wang, Yue-Yang Liu, Chengxin Zhao, Xuepeng Zhan, Zheng Vitto Han, Hanwen Wang
Summary: This study successfully demonstrated a gate-programmable non-volatile memory by vertically assembling graphite, CuInP2S6, and MoS2 layers into a metal-ferroelectric-semiconductor (M-FE-S) architecture. The resulting devices integrate the functionalities of both ferroelectric memristor (FE-memristor) and metal-oxide-semiconductor field-effect transistor (MOS-FET), enabling gate-tunable giant electroresistance with multi-level ON-states in the FE-memristor. First-principles calculations revealed that this behavior originates from the specific band alignment at the FE-S interface. These findings pave the way for engineering ferroelectricity-mediated memories in future implementations of 2D nanoelectronics.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Chuanshou Wang, Lu You, David Cobden, Junling Wang
Summary: Research on two-dimensional van der Waals ferroelectrics has experienced significant progress in recent years. This Perspective presents a framework for analysis, provides a review of recent advances, discusses mechanisms and properties for potential applications, and outlines the challenges that need to be addressed. The discovery of ferroelectricity in two-dimensional van der Waals materials has introduced important functionalities to the family of 2D materials, which could revolutionize next-generation nanoelectronics and spintronics. This Perspective briefly reviews recent progress in the field of 2D van der Waals ferroelectrics, focusing on the mechanisms driving spontaneous polarization, unique properties arising from reduced lattice dimensionality, and promising applications. The article concludes with an outlook on challenges and possible future research directions.
Article
Nanoscience & Nanotechnology
Lu You, Amr Abdelsamie, Yang Zhou, Lei Chang, Zhi Shiuh Lim, Junling Wang
Summary: The ferroelectric photovoltaic effect in BiFeO3-based vertical heterostructures is studied comprehensively to investigate its origin. It is found that the polarization-modulated Schottky barrier at the interface dominates the photovoltaic behavior under white light illumination. The selective interface contribution in different polarization states is observed, indicating the absence of bulk photovoltaic effect in vertical heterostructures under white light illumination.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Physics, Applied
Wei Yuan, Yilei Lu, Liangjun Lu, Rui Wang, Yuyan Weng, Lu You, Liang Fang, Linjie Zhou, Fengang Zheng
Summary: As a recently studied phase change material, Ge2Sb2Se4Te1 (GSST) has shown promising potential in optical devices due to its low loss in the amorphous state at the optical communication wavelength of 1550 nm and significant differences in optical properties before and after phase change. However, achieving phase change switching in real GSST devices using narrow voltage pulses remains challenging.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
Jinshuo Xue, Shun Wang, Ju Zhou, Qiankun Li, Ziwen Zhou, Qiang Hui, Yiqi Hu, Zhou Zhou, Zhijian Feng, Qingyu Yan, Yiqing Yu, Yuyan Weng, Rujun Tang, Xiaodong Su, Yu Xin, Fengang Zheng, Sheng Ju, Lu You, Liang Fang
Summary: Recent success has reignited research interest in exfoliating violet or Hittorf's phosphorus to monolayer for improved electronic and optoelectronic functionalities. However, the poor air stability of black phosphorus also affects violet phosphorus. In this study, concerted spectroscopic techniques reveal the role of oxygen and water in the degradation mechanism of violet phosphorus, leading to the development of an oxide encapsulation passivation approach for air-stable violet phosphorus photodetector device. The fabricated photodetector demonstrates superior performance with ultralow dark current, high responsivity, fast response time, and excellent chemical robustness.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Multidisciplinary
Shuai Yuan, Zuhuang Chen, Sergei Prokhorenko, Yousra Nahas, Laurent Bellaiche, Chenhan Liu, Bin Xu, Lang Chen, Sujit Das, Lane W. Martin
Summary: Using phase-field simulations, the evolution of polar topology and the emergence of a hexagonal close-packed skyrmion lattice in ultrathin ferroelectric PbTiO3 films is explored. The lattice can be stabilized under an external electric field and the lattice constants increase with film thickness. These studies pave the way for the development of novel ordered condensed matter phases in nanoscale ferroelectrics.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Applied
Qiankun Li, Shun Wang, Jinshuo Xue, Ziwen Zhou, Yiqi Hu, Zhou Zhou, Zhijian Feng, Qingyu Yan, Yiqing Yu, Yuyan Weng, Rujun Tang, Xiaodong Su, Fengang Zheng, Liang Fang, Lu You
Summary: Metal thio(seleno)phosphates are a class of layered compounds with diverse physical properties and potential applications. In this study, the electronic transport characteristics of a quaternary selenophosphate, AgBiP2Se6, were actively manipulated by accumulating or removing mobile Ag+ ions at the metal-semiconductor interface. This manipulation effectively modulated the Schottky barrier and produced switchable diode-like behavior. Furthermore, the superior photoelectric response of AgBiP2Se6 allowed for the incorporation of induced rectifying transport.
PHYSICAL REVIEW APPLIED
(2023)
Article
Materials Science, Multidisciplinary
Xianlong Cheng, Chao Zhou, Baichen Lin, Zhenni Yang, Shanquan Chen, Kelvin H. L. Zhang, Zuhuang Chen
Summary: Fluorite-structured Hf0.5Zr0.5O2 (HZO) thin films have gained attention for their good CMOS-compatibility and robust ferroelectricity. However, the challenges of high leakage current and poor endurance hinder the application of HZO in microelectronic devices. This study investigates the electric properties of Pt/HZO/La0.7Sr0.3MnO3 (LSMO) heterostructures and finds that the leakage mechanism is dominated by Schottky emission. By post-annealing in oxygen atmosphere, the barrier height can be increased, effectively reducing leakage current and improving endurance.
APPLIED MATERIALS TODAY
(2023)
Article
Multidisciplinary Sciences
Xiaodong Yao, Yinxin Bai, Cheng Jin, Xinyu Zhang, Qunfei Zheng, Zedong Xu, Lang Chen, Shanmin Wang, Ying Liu, Junling Wang, Jinlong Zhu
Summary: The authors of this study found that CuInP2S6 exhibits an anomalous enhancement of spontaneous polarization under hydrostatic pressure. This is in contrast to the typical pressure-induced suppression of ferroelectricity. The increase in polarization is attributed to the spatial instability of Cu cations and the increase of Cu occupancy at the interlayer site. These findings provide valuable insights into the behavior of this van der Waals material and suggest new avenues for improving its properties.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Baichen Lin, Yanyi Zhang, Hongjian Zhang, Haofei Wu, Junda Shao, Jian Shao, Kai Liu, Shanquan Chen, Chao Zhou, Xianlong Cheng, Jingyu Lu, Kailong Hu, Yan Huang, Weiwei Zhao, Pan Liu, Jixin Zhu, Hua-Jun Qiu, Zuhuang Chen
Summary: Two-dimensional (2D) metals have attracted significant attention for their unique properties and potential applications. However, the fabrication of atomically thin 2D metals remains challenging. In this study, we demonstrate a general method to fabricate freestanding, high-quality 2D metals with large aspect ratios and controllable thickness using Pt as a model system.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Shiwei Wang, Yixuan Wang, Qi Wei, Junling Wang
Summary: Organic-inorganic hybrid perovskites have received much attention for their opto-electronic applications. The study shows that external illumination can lead to larger size perovskite single crystals and improved film quality. The light-enhanced growth phenomenon can be explained by the photo-inhibition nucleation mechanism.
Article
Materials Science, Multidisciplinary
Zhigang Gui, Chao Gu, Hu Cheng, Jinlong Zhu, Xiaohui Yu, Er-jia Guo, Liusuo Wu, Jiawei Mei, Jieming Sheng, Jianzhong Zhang, Junling Wang, Yusheng Zhao, Laurent Bellaiche, Li Huang, Shanmin Wang
Summary: A metallic material, CrN, is found to exhibit a multiferroic phenomenon similar to insulating multiferroic materials, with a spin-frustration-induced long-range antiparallel ordering of electric dipoles. This discovery provides an important sample for investigating new underlying physics and exploring unusual properties for practical applications.
