Article
Engineering, Electrical & Electronic
Tingting Ruan, Jie Yuan, Jing Xu, Yunfei Liu, Yinong Lyu
Summary: In this study, lead-free BNT-SLBT ceramics were designed and prepared, exhibiting giant strain response and piezoelectric strain coefficient, as well as high energy storage performance and rapid discharge characteristics.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Physics, Applied
Diyan Yang, Xiaojun Wu, Xianya Wang, Haoyue Xue, Jie Yin, Jiagang Wu
Summary: This study investigates the formation mechanism of depolarization temperature (T-d) in Bi0.5Na0.5TiO3 (BNT) ceramics and proposes a novel design strategy to simultaneously enhance the piezoelectricity and defer T-d by introducing ferroelectric components with different local symmetries. This work provides insights into the design of high-performance materials based on BNT, benefiting the understanding and improvement of BNT-based relaxor ferroelectrics.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Engineering, Chemical
Zhu Liu, Ying Zheng, Shuang Zhang, Jie Fu, Yanqiang Li, Yongcheng Zhang, Wanneng Ye
Summary: A solid solution piezocatalyst, (1-x)Bi0.5Na0.5TiO3-xBiFeO(3), was synthesized to improve the piezocatalytic activities of Bi0.5Na0.5TiO3 (BNT) and BiFeO3 (BFO). Among them, 0.5BNT-0.5BFO catalyst showed outstanding piezocatalytic activity and reusability compared to pure BNT and BFO.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Physics, Applied
Yasuhiro Yoneda, Tohru Kobayashi, Takuya Tsuji, Daiju Matsumura, Yuji Saitoh, Yuji Noguchi
Summary: A local structural analysis and electronic structure analysis were performed on high-quality BNT-BT solid solutions using synchrotron radiation X-rays to elucidate the mechanism of enhanced ferroelectric properties. The BNT-BT solid solution undergoes phase transitions to tetragonal structures with space groups P4bm and P4mm. The local structure analysis reveals a reduced off-center shift of A-site atoms due to BT substitution, which is consistent with the electronic structure obtained by X-ray absorption spectroscopy.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2023)
Article
Physics, Applied
Xiaojun Wu, Chao Wu, Lanji Wen, Jie Yin, Jiagang Wu
Summary: For Bi0.5Na0.5TiO3 (BNT)-based materials, regulating temperature and composition can induce giant electro-strain under the critical condition. However, only the temperature-dependent regulation method achieves low hysteresis and maintains a high strain under high ergodic condition. The discrepancy between these two regulation methods lies in their different regulation mechanisms, especially in terms of the microscopic structure and polar entities.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
Jinyan Zhao, Nan Zhang, Yi Quan, Gang Niu, Wei Ren, Zhe Wang, Kun Zheng, Yulong Zhao, Zuo-Guang Ye
Summary: Bismuth sodium titanate and related compounds are promising lead-free ferroelectric materials, with domain structure affecting their piezoelectric and ferroelectric properties, and the evolution of domain structure under electric field. It is found that the addition of barium titanate can increase domain sizes in the material and induce a transition from relaxor behavior to a ferroelectric state.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Materials Science, Ceramics
Xuefan Zhou, Guoliang Xue, Hang Luo, Xi Yuan, Dou Zhang
Summary: In this study, synergistically enhanced d(33) and T-d were achieved in AlN-modified 0.84Bi(0.5)Na(0.5)TiO(3)-0.11Bi(0.5)K(0.5)TiO(3)-0.05BaTiO(3) ceramics. The addition of 1 mol% AlN increased both d(33) from 165 to 234 pC/N and T-d by about 50 degrees C. Rietveld analysis revealed an increase in the proportion of the tetragonal phase and the presence of larger grains and high-density lamellar nanodomains in the modified ceramics. The improved tetragonality and field stability contributed to the delayed thermal depolarization.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Engineering, Electrical & Electronic
Haipeng Zhu, Jinyuan Wu, Fayaz Hussain, Tao Ni, Jiajing Li, Yan Wang, Hao Xi, Minmin Mao, Ji Hu, Bing Liu, Kaixin Song
Summary: In this study, 0.75BNT-0.25BKT-xCZ ceramics were synthesized and their phase structure, dielectric properties, ferroelectric properties and field-induced strain properties were analyzed. It was found that the ceramics exhibited the maximum unipolar strain and moderate hysteresis at x = 0.03. Further investigation revealed that the tradeoff between large strain and low hysteresis was achieved through reversible phase transition and relaxation behavior.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Chaoqiong Zhu, Ziming Cai, Limin Guo, Ying Jiang, Longtu Li, Xiaohui Wang
Summary: In this study, high-temperature dielectric lead-free ceramics were constructed by introducing trace MgO, effectively controlling dielectric loss and leakage current at high temperatures. The ceramics demonstrated excellent stability and high energy density.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Yi Zhang, Aiwen Xie, Jian Fu, Xuewen Jiang, Tianyu Li, Cong Zhou, Ruzhong Zuo
Summary: This study proposes a novel approach to enhance the energy storage performance of ceramic materials by manipulating the multiscale structure and field-induced structural transformation. By adding antiferroelectric NaNbO3, the structure of the solid solution can be adjusted, and a lower energy barrier field-induced transformation can be achieved through the construction of a phase boundary. The optimized structural transformation behavior and formation of nanodomains minimize polarization hysteresis and enhance the maximum polarization. Additionally, the decreased grain size and increased band gap improve the breakdown strength of the material.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
S. Sahoo, R. Barman, T. Badapanda, S. Sarangi, Satya N. Tripathy
Summary: In this study, the structural evolution, dielectric, and conductivity properties of lead-free ceramics doped with CeO2 were investigated. X-ray diffraction analysis revealed a dual-phase structure of rhombohedral and tetragonal crystals, with Ce ions diffusing into the lattice. The permittivity data showed that doping with CeO2 changed the maximum dielectric constant. The ac-conductivity of the samples was analyzed using Arrhenius's law and Mott's variable range hopping mechanism, and model parameters were calculated.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Engineering, Multidisciplinary
Peng Shi, Xiaopei Zhu, Xiaojie Lou, Bian Yang, Xudong Guo, Liqiang He, Qida Liu, Sen Yang, Xiaoxiao Zhang
Summary: Lead-free ceramics were prepared with high energy storage performance, exhibiting excellent performance under high electric fields, especially remaining outstanding properties in high-temperature environments.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Engineering, Environmental
Fei Yan, Hairui Bai, Yunjing Shi, Guanglong Ge, Xiaofeng Zhou, Jinfeng Lin, Bo Shen, Jiwei Zhai
Summary: The study introduced sandwich structured lead-free ceramics based on Bi0.5Na0.5TiO3 to optimize polarization and electric breakdown strength in energy storage properties. The prepared ceramics showed an ultrahigh recoverable energy storage density, ideal energy conversion efficiency, increased applied electric field, and outstanding stability over a broad range of conditions. It demonstrated a great potential for high energy storage capacitors applications.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
F. Yang, S. Bao, Y. Zhai, Y. Zhang, Z. Su, J. Liu, J. Zhai, Z. Pan
Summary: Predictable defects engineering strategy was employed to enhance the energy storage performance of dielectric ceramics, resulting in the successful fabrication of novel ceramics with improved properties and providing an effective route for developing Bi0.5Na0.5TiO3-based systems.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Engineering, Environmental
Hao Wang, Shengyang Wu, Bo Fu, Jingji Zhang, Huiwei Du, Quan Zong, Jiangying Wang, Zhongbin Pan, Wangfeng Bai, Peng Zheng
Summary: In this study, it was found that hierarchically polar structures and oxygen octahedral tilting can be induced in the 0.7Bi0.5Na0.5TiO3-0.3Na0.91Bi0.09Nb0.94Mg0.06O3 matrix by adding CaZrO3, resulting in outstanding comprehensive energy storage properties (ESPs). The optimized composition exhibited an ultrahigh recoverable energy storage density of 7.5 J cm-3 and a high efficiency of 94.5% at a breakdown electric field of 510 kV cm-1. Additionally, the composition displayed excellent stability at 410 kV cm-1. This study provides a new perspective for designing lead-free relaxor ferroelectric ceramics with ultra-high ESPs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Jiaqian Yang, Zheng Wu, Zhihua Duan, Chuanqin Li, Helezi Zhou, Tao Wang, Feifei Wang, Xiangyong Zhao, Yanxue Tang, Han Pan, Chung Ming Leung
Summary: In this study, high-quality ternary thin films were prepared, exhibiting excellent physical properties and great potential for various applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Chung Ming Leung, Yangchenbo Liu, Qiang Li, Feifei Wang
Summary: This study investigates a dual-coupling mode that combines electrical and electromechanical to achieve wide bandwidth and frequency tuning in a ME laminated composite connected to an external inductor. The experimental results match the theoretical analysis, demonstrating the effective achievement of bandwidth expansion, ME coupling coefficient enhancement, and resonance frequency tuning.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2022)
Article
Chemistry, Physical
Chung Ming Leung, Xiaoqiu Chen, Tao Wang, Yanxue Tang, Zhihua Duan, Xiangyong Zhao, Helezi Zhou, Feifei Wang
Summary: This study embedded lead-free bismuth titanate-barium titanate nanoparticles and nanofibers into PVDF nanofibers to enhance the voltage output and power of flexible pressure sensors. The experimental results showed a six-fold increase in maximum output voltage compared to pure PVDF sensors.
Article
Chemistry, Multidisciplinary
Qiang Li, Jian Zhang, Qunfei Zheng, Wenyu Guo, Jiangming Cao, Meiling Jin, Xingyu Zhang, Nana Li, Yanhui Wu, Xiang Ye, Pingping Chen, Jinlong Zhu, Tao Wang, Wangzhou Shi, Feifei Wang, Wenge Yang, Xiaomei Qin
Summary: This study reports the discovery of richer transport properties, including abnormal properties and superconductivity, in high-pressure HgTe crystals. By pressure-tuning, a series of high-pressure phases were observed in a 400 nm thick crystal, and superconductivity emerged after the semiconductor-to-metal transition. Density functional theory calculations confirmed the contribution of surface-dominated topological band structure to these properties.
Article
Materials Science, Multidisciplinary
Zhen Liu, Xinrong Wen, Yang Wang, Yanmin Jia, Feifei Wang, Guoliang Yuan, Yaojin Wang
Summary: By extending flexoelectricity to electrochemical functionality, it is demonstrated that flexo-catalysis effect can be achieved in centrosymmetric nanoparticles to degrade organic dyes.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Nanoscience & Nanotechnology
Kun Zhu, Guanglong Ge, Jinfeng Lin, Hairui Bai, Cheng Shi, Guohui Li, Fei Yan, Liuxue Xu, Weiwei Yang, Huarong Zeng, Kunyu Zhao, Zhenyong Man, Feifei Wang, Bo Shen, Jiwei Zhai, Xiujian Chou
Summary: The study reveals an anomaly where increasing polarization direction leads to a decrease in piezoelectric properties of thin films, influenced by the concentration of structural defects. Suppressing domain dynamics response by increasing structural defects could explain this phenomenon.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Zihao Li, Yuchun Wang, Zhihua Duan, Wei Cheng, Xiangyong Zhao, Tao Wang, Feifei Wang
Summary: The Mn-doped thin films fabricated by pulsed laser deposition showed excellent ferroelectric properties and nanoscale piezoelectric response under different oxygen pressures. The variation in oxygen pressure resulted in changes in the crystallinity and morphology of the thin films, affecting their dielectric, ferroelectric, and piezoelectric properties.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Environmental Sciences
Hongyuan Xiao, Jiahuan He, Xunyu Lu, Feifei Wang, Yiping Guo
Summary: This study successfully synthesized nano single-crystalline ferroelectric piezo-photoelectric materials with strong visible light absorption ability and enhanced catalytic efficiency using carbon quantum dots. RhB was degraded and high hydrogen production rates were achieved under visible light-ultrasonic and simulated sunlight-ultrasound conditions. This work presents an important paradigm for preparing multi-energy catalysts.
Article
Physics, Applied
Ming-Yuan Yan, Shuang-Shuang Li, Jian-Min Yan, Li Xie, Meng Xu, Lei Guo, Shu-Juan Zhang, Guan-Yin Gao, Fei-Fei Wang, Shan-Tao Zhang, Xiaolin Wang, Yang Chai, Weiyao Zhao, Ren-Kui Zheng
Summary: In this study, we demonstrate the electric field control of the spin-orbit interaction (SOI) through constructing ferroelectric Rashba structures. By utilizing switchable ferroelectric polarization, the spin relaxation time and spin splitting energy of Bi2O2Se films can be modulated reversibly and non-volatilely, providing a scheme for achieving nonvolatile control of the SOI.
PHYSICAL REVIEW APPLIED
(2022)
Article
Materials Science, Ceramics
Xianyao Jiang, Jiasheng Wang, Zhihua Duan, Chuanqing Li, Tao Wang, Yanxue Tang, Helezi Zhou, Xiangyong Zhao, Feifei Wang
Summary: In this study, ternary ferroelectric thin films were grown on substrates using RF magnetron sputtering method. The optimized conditions resulted in large ferroelectric polarization and high piezoelectric coefficient for the thin films. These findings demonstrate the potential importance of the films for applications in piezoelectric micro-electro-mechanical systems.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Shuo Gao, Peng Li, Jiawei Qu, Wei Li, Jiwei Zhai, Feifei Wang, Jigong Hao, Peng Fu, Zhongbin Pan, Wangfeng Bai
Summary: The piezoelectric properties of KNN-based ceramics were improved by utilizing the synergistic effect of crystal orientation and phase structure, resulting in high piezoelectric coefficient, electric field-induced strain, and superior temperature stability.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Zheng Wu, Jiaqian Yang, Xianyao Jiang, Xucheng Ke, Yu Cai, Tao Wang, Zhihua Duan, Zhongchen Gao, Feifei Wang
Summary: The piezoelectric and electromechanical properties of NBT-6BT lead-free piezoelectric ceramic were studied using AC polarization and DC polarization methods. The results showed that the thickness-mode electromechanical coupling coefficient (k(t)) of NBT-6BT near the MPB was significantly improved by AC polarization, with a 28.6% enhancement ratio. The enhancement was mainly due to the higher domain wall density boosted by AC polarization, as observed through piezoresponse force microscopy and X-ray diffraction.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Physics, Applied
Liang Cao, Jiasheng Wang, Qiaozhen Zhang, Zhihua Duan, Tao Wang, Yanxue Tang, Xiangyong Zhao, Zibin Chen, Feifei Wang
Summary: This study investigated the influence of transverse size on the electrical properties of a relaxor ferroelectric material PIMNT. The decrease in transverse size led to an increase in piezoelectric and dielectric properties. The pyroelectric coefficient decreased with a decrease in aspect ratio. This finding provides insight into designing high-performance infrared array detectors.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Hai Hang, Xianyao Jiang, Di Lin, Feifei Wang, Xi'an Wang, Haosu Luo
Summary: In order to improve the acoustic impedance and electromechanical property of ultrasound transducers, a Pb(Mg1/3Nb2/3)O-3-xPbTiO(3) single crystal/epoxy 1-3 piezoelectric composite was designed. The piezo-/dielectric properties of the composites prepared using different poling methods were measured. It was found that the composites under optimized alternating current polarization (ACP) showed significant increases in piezoelectric coefficient, dielectric constant, and electromechanical factor compared to those under direct current polarization (DCP). The ACP composite-based transducer also exhibited improved bandwidth and relative sensitivity.
CURRENT APPLIED PHYSICS
(2023)
Article
Crystallography
Yaqi Liu, Qiaozhen Zhang, Mingzhu Chen, Xiaonan Liu, Jiye Yang, Feifei Wang, Yanxue Tang, Bin Miao, Jiadong Li, Xiangyong Zhao
Summary: In this paper, the design and analysis of a PMUT device based on high-performance and lead-free Na0.5Bi0.5TiO3-BaTiO3 (NBBT) piezoelectric single-crystal thin films are presented. The effects of structure configuration on the device performance were studied. By rotating the Euler Angle γ of the NBBT piezoelectric single-crystal film, the sensitivity and keff2 of the model were improved. The results show that the PMUT using rotated NBBT offers high resolution and frequency for medical ultrasound imaging.
