Article
Chemistry, Inorganic & Nuclear
Prabhasini Gupta, P. K. Mahapatra, R. N. P. Choudhary
Summary: Two new compounds, Bi2GdZrVO9 and Bi2DyZrVO9, with two pseudo-perovskite units per cell from the Aurivillius family were processed using the solid-state reaction method. The effects of lanthanides at the A-site and a combination of transition elements at the B-site of the bismuth layer structured compounds were discussed. The Nyquist plots confirmed the contribution of only grain to the polarization mechanism and the depression angle was used to estimate deviation from the Debye behavior. The activation energy for relaxation processes, conduction processes, and grain resistance suggested the involvement of oxygen vacancy ionization. The dielectric properties of both samples were found to be better compared to other bismuth layer family members, and Jonscher's power law was used for conductivity analysis.
SOLID STATE SCIENCES
(2021)
Article
Materials Science, Multidisciplinary
Juan-Nan Chen, Connie Kang, Rui-Min Hou, Xian Zhao, Chun-Ming Wang
Summary: The study reports the enhanced piezoelectric properties of gadolinium-modified Ca1-xGdxBi2Nb2O9 high Curie temperature polycrystalline ferroelectric ceramics. The optimized CBN-3Gd composition shows significantly improved electrical performance, making it a promising material for high-temperature piezoelectric sensor applications.
JOURNAL OF MATERIALS RESEARCH
(2021)
Article
Materials Science, Ceramics
Penghao Niu, Zixin Zhang, Fangfang Wang, Kang Yan
Summary: Bismuth titanate (BIT) is an important ferroelectric material for high-temperature piezoelectric applications due to its high Curie temperature and anisotropic electrical performance. In this study, a highly textured BIT ceramic was fabricated, showing significant anisotropy in electrical properties along different directions.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Jing Yan, Jun Ouyang, Hongbo Cheng, Hanfei Zhu, Chao Liu
Summary: In this study, Bi4Ti3O12-CaBi4Ti4O15 intergrowth ferroelectric films integrated on Si were shown to possess an ultrahigh recyclable energy density and good energy efficiency, achieved through the combination of high spontaneous polarization and a polycrystalline nanograin microstructure. The limited grain growth and buffer layer effect exhibited by this structure contributed to remarkable fatigue-resistance and excellent charge-retaining ability.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Ceramics
Rui Xu, Pan Chen, Caiwen Chen, Yu Hou, Baojin Chu
Summary: By changing the composition of ceramics to improve their conductivity, the thermal-electrical like response in ferroelectric materials can be significantly enhanced, mainly attributed to the flexoelectric-like response generated by the spontaneously polarized surface under inhomogeneous deformation.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
G. K. Sahu, S. Behera, V Senthil, T. Badapanda
Summary: This study investigates the impact of Dy doping on the structure and properties of Sr(Bi1-xDyx)(2)Ta2O9 ceramics prepared by mixed oxide process. The results show that Dy doping leads to a reduction in transition temperature and relative permittivity, as well as a decrease in residual polarization and coercive field. Impedance spectroscopy reveals the electrical contributions from both grains and grain boundaries in the doped ceramics, and a non-Debye type relaxation mechanism is observed. The ac conductivities variation follows Jonscher's power law, suggesting a conduction mechanism governed by the correlated barrier-hopping model.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Ting Wang, Haiming Zhang, Yueyun Huang, Jiaming Chen, Weiping Gong
Summary: This study improves the breakdown strength, relaxation behavior, and energy-storage performance of BaTiO3-BiFeO3 ceramics by adding Bi(Mg2/3Ta1/3)O-3, leading to the generation of polar nanoregions (PNRs). The composite ceramics demonstrate excellent efficiency and high recoverable energy density at 240 kV/cm, along with high stability and good thermal stability in a wide range of frequencies and temperatures. These properties make the Bi(Mg2/3Ta1/3)O3-doped 0.33BaTiO3-0.67BiFeO3 ceramic attractive for energy-storage applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
R. L. Nayak, Yajun Zhang, Sadhwi S. Dash, M. P. K. Sahoo
Summary: Compositional engineering at the morphotropic phase boundary is a strategy to achieve unprecedented physical properties. This study investigates the structural, dielectric, electrical, and energy storage properties of lead-free BCZT material through compositional tuning at the Ba-site. The addition of La/Na co-doping enhances the recoverable energy density, reduces the loss energy density, and increases the storage efficiency. The improved dielectric and storage properties are explained using impedance spectroscopy and density functional theory calculations.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Yanshuang Hao, Yiguan Li, Zhiyong Zhou, Ruihong Liang, Kaili Mei, Zhengyang Zhou, Genshui Wang
Summary: In this paper, an anomalous ferroelectric material Li0.5Bi2.5Nb2O9 (LBN) with small orthorhombic distortion but very high transition temperature was reported. LBN showed the highest transition temperature (834 degrees C) among currently reported prototype alkali-metal BLSFs, which was attributed to its small tolerance factor. The understanding gained from this work may contribute to the discovery of more novel BLSFs with high performance.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Engineering, Environmental
Yu Huan, Tao Wei, Xiaozhi Wang, Xiaoming Liu, Peiyao Zhao, Xiaohui Wang
Summary: By designing local-composition gradient-structured grains, the energy storage efficiency performance under high-intensity electric field can be improved, enhancing the performance of dielectric ceramic capacitors.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Rachna Selvamani, Adityanarayan H. Pandey, S. M. Gupta, A. K. Karnal
Summary: The study investigated the La-substituted Bi4-xLaxTi3O12 lead-free ceramics through structural, microstructural, complex impedance spectroscopy, and dielectric relaxation studies, revealing the substitutional site preference of La3+ ions, temperature-dependent ferroelectric to relaxor crossover, and random weak interaction between small polar regions.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Ceramics
Zhi Tan, Jingwen Xi, Jie Xing, Bo Wu, Qiming Zhang, Qiang Chen, Jianguo Zhu
Summary: This study presents a systematic orientational average method using first-principle calculations to estimate the piezoelectric properties of polycrystalline ferroelectric materials. The method bridges the gap between single crystal and polycrystal ferroelectric materials and contributes to the further study of piezoelectric polycrystals. The piezoelectric properties of bismuth layer-structured ferroelectrics (BLSFs) are investigated using this method, revealing the importance of polarization stretching and slipping in BLSFs' piezoelectricity.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Mingyang Tang, Linjiang Yu, Yifei Wang, Jingwen Lv, Jia Dong, Biao Guo, Fukang Chen, Qiao Ai, Yu Luo, Quan Li, Kun Yu, Fei Wu, Gang Liu
Summary: The introduction of Ba(Zn1/3Nb2/3)O-3 (BZN) disrupts long-range order domains and improves the energy storage performance of lead-free ceramics. With increased BZN content, the dielectric relaxation behavior is enhanced, hysteresis loop becomes thinner, remnant polarization decreases, and the breakdown electric field increases to 180 kV/cm in 15BZN.
CERAMICS INTERNATIONAL
(2021)
Review
Multidisciplinary Sciences
Chun-Ming Wang, Juan-Nan Chen, Hong-Ting Lu, Qian Wang
Summary: Piezoelectric materials play a crucial role in modern electronic devices, requiring high Curie temperature for applications in extreme conditions. Bismuth layer-structured ferroelectrics (BLSFs) are promising high-temperature piezoelectric materials due to their high Curie temperature. Calcium bismuth niobate (CBN) has potential as a piezoelectric sensor material, but faces challenges due to its crystal structure. Substitution of A-site ions is more effective than B-site ions to enhance the piezoelectric properties of CBN ceramics.
CHINESE SCIENCE BULLETIN-CHINESE
(2021)
Article
Engineering, Electrical & Electronic
Mingwei Zhang, Le Xin, Zhaoxing Dong, Yanyu Zhang, Jingjing Jin, Zhengxin Li, Yuze Xue, Luchao Ren, Jiwei Zhai
Summary: The relationship among phase composition, microstructures, and dielectric properties of different ceramic composites was investigated. It was found that increasing the content of Ba1-xSrxCuSi2O6 and Sr2+ gradually suppresses and broadens the dielectric peak of the composites. While introducing Ba1-xSrxCuSi2O6 reduces dielectric permittivity to some extent, dielectric tunability and quality factor remain high.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Yajun Yue, Aleksandra Dziegielewska, Stephen Hull, Franciszek Krok, Richard M. Whiteley, Harold Toms, Marcin Malys, Man Zhang, Haixue Yan, Isaac Abrahams
Summary: The defect structure of the fast oxide ion conductor Bi2V1-xGexO5.5-x/2-delta has been studied using reverse Monte Carlo analysis, revealing different local geometries of germanium and vanadium at different temperatures, as well as a short-range ordering phenomenon.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Pengtao Li, Y. Q. Yang, Vladimir Koval, Xian Luo, Jianxin Chen, Wei Zhang, E. Emily Lin, Bowen Wang, Haixue Yan
Summary: This study investigates Cu nanowires covered by Ag particles using molecular dynamics simulation. The results reveal different deformation mechanisms depending on the size of Ag particles in the Cu-Ag core-particle system. The mechanical properties of the system are influenced by temperature, particularly for particles larger than 2.0 nm.
JOURNAL OF MATERIOMICS
(2022)
Article
Chemistry, Physical
Nan Meng, Xintong Ren, Jiyue Wu, Emiliano Bilotti, Michael J. Reece, Haixue Yan
Summary: Ferroelectric polymer poly (vinylidene fluoride) (PVDF) and its copolymer with trifluoroethylene (PVDF-TrFE) were successfully processed into highly compatible blended films of isotropic crystalline structure using a pressing-and-folding method. The blended films showed excellent ferroelectric properties, surpassing the pure PVDF-TrFE and pure PVDF.
JOURNAL OF MATERIOMICS
(2022)
Article
Materials Science, Multidisciplinary
Man Zhang, Xinzhao Xu, Shafique Ahmed, Yajun Yue, Matteo Palma, Peter Svec, Feng Gao, Isaac Abrahams, Michael J. Reece, Haixue Yan
Summary: 6ABTO is a single phase four-layer Aurivillius structured ferroelectric ceramic with complex ferroelectric behavior and high Curie point, showing unique current-electric field behavior. Despite the disorder between component cations, 6ABTO does not exhibit relaxor ferroelectric behavior, suggesting that relaxor behavior may be more associated with the thermal stability of dipoles.
Article
Chemistry, Physical
Ping Zhang, Lingyun Gong, Zhihao Lou, Jie Xu, Shuyao Cao, Jiatong Zhu, Haixue Yan, Feng Gao
Summary: This study introduces a novel compositional design strategy for thermoelectric oxides by incorporating multi-component cations using high-entropy engineering. The resulting ceramics exhibit low lattice thermal conductivity and high power factor, which are favorable for thermoelectric applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Qian Chen, Ping Zhang, Zhihao Lou, Lingyun Gong, Shuyao Cao, Jie Xu, Jie Kong, Zinovi Dashevsky, Haixue Yan, Feng Gao
Summary: The electron and phonon thermal transport behavior of Ag+ doped KSr2Nb5O15 were studied, and it was found that Ag+ doping effectively increased the carrier concentration and electrical conductivity, reduced the thermal conductivity, and improved the thermoelectric performance. Experimental and calculated results showed that Ag improved the thermoelectric properties of KSr2Nb5O15. The addition of 20 wt% nanosized Ag resulted in the highest power factor and ZT at 1073 K.
CERAMICS INTERNATIONAL
(2023)
Article
Nanoscience & Nanotechnology
Boyuan Li, Zhongna Yan, Xuefan Zhou, He Qi, Vladimir Koval, Xiaogang Luo, Hang Luo, Haixue Yan, Dou Zhang
Summary: Lead-free AgNbO3-based antiferroelectric ceramics with codoping of La3+ and Ta5+ ions demonstrate high energy storage performance, with an ultrahigh recoverable energy storage density of 6.73 J/cm3 and a high energy storage efficiency of 74.1% under a unipolar electric field of 540 kV/cm. This codoping strategy improves the structural stability and shifts the electric field-induced antiferroelectric-ferroelectric phase transition towards higher fields, resulting in enhanced energy storage properties for AgNbO3 ceramics.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Zimeng Hu, Hangfeng Zhang, Zhigang Zhu, Jiangtao Zeng, Dou Zhang, Mirva Eriksson, Giuseppe Viola, Haixue Yan
Summary: The majority of piezoelectric ceramics based on Pb(Zr, Ti)O-3 (PZT) exhibit hysteretic behavior, which varies depending on various factors. The ternary system 0.05Pb(Mn1/3Sb2/3)O-3-0.95Pb(Zr0.52Ti0.48)O-3 (5PMS-PZT) has shown attractive piezoelectric properties with superior thermal stability. This work further delves into the hysteretic aspects of 5PMS-PZT ceramics and describes unique hysteresis features influenced by various factors.
Article
Chemistry, Physical
Yajun Yue, Aleksandra Dziegielewska, Man Zhang, Stephen Hull, Franciszek Krok, Richard M. Whiteley, Harold Toms, Marcin Malys, Xuankai Huang, Marcin Krynski, Ping Miao, Haixue Yan, Isaac Abrahams
Summary: BIMEVOX is a type of material that exhibits excellent oxide ion conductivity at low and intermediate temperatures. The local structures of two BIMEVOX compositions were studied using neutron and X-ray scattering methods. The results showed that the compositions have different ordered structures at different temperatures, and their oxide ion vacancy distributions also differ. Impedance spectroscopy measurements revealed high conductivity for both compositions at high temperatures.
CHEMISTRY OF MATERIALS
(2023)
Letter
Materials Science, Multidisciplinary
Man Zhang, Vladimir Koval, Yu Shi, Yajun Yue, Chenglong Jia, Jiagang Wu, Giuseppe Viola, Haixue Yan
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Zimeng Hu, Vladimir Koval, Yajun Yue, Man Zhang, Chenglong Jia, Isaac Abrahams, Haixue Yan
Summary: The dielectric, ferroelectric and magnetic properties of novel multiferroics derived from BaTi1-x(Fe0.5Nb0.5)xO3 ceramics were investigated. The coexistence of ferroelectric long-range ordering and antiferromagnetism was observed. The results indicate that the antiferromagnetic order is established through an indirect super-exchange interaction between adjacent Fe ions in the x = 0.07 composition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Zimeng Hu, Hangfeng Zhang, Michael John Reece, Giuseppe Viola, Haixue Yan
Summary: Relaxor ferroelectric behavior was observed in CSBPN ceramics engineered using the high entropy approach, exhibiting high relative permittivity and the presence of polar nanoregions.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Shengjie Fan, Tingting Sun, Meng Jiang, Shijia Gu, Lianjun Wang, Haixue Yan, Wan Jiang
Summary: This study developed a method to achieve in-situ growth of uniform carbon nanotubes (CNTs) on zinc oxide (ZnO) nanoparticles using chemical vapor deposition technology. Magnetic nickel nanoparticles were introduced as catalysts to promote CNT formation and enhance the electrical and thermal conductivity of ZnO matrices. The electrical conductivity of ZnO was significantly improved, and the thermal conductivity was reduced. The mechanical properties of the composites were also enhanced. This work provides a valuable reference for dispersing nano-phases in thermoelectric materials to enhance both thermoelectric and mechanical properties.
JOURNAL OF ADVANCED CERAMICS
(2022)
Article
Chemistry, Physical
Ping Zhang, Zhihao Lou, Lingyun Gong, Jie Xu, Qian Chen, Michael John Reece, Haixue Yan, Zinovi Dashevsky, Feng Gao
Summary: High-entropy oxides with complex compositions can lower the thermal conductivity of SrTiO3-based thermoelectric materials to optimize their properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yajun Yue, Aleksandra Dziegielewska, Man Zhang, Stephen Hull, Franciszek Krok, Richard M. Whiteley, Harold Toms, Marcin Malys, Xuankai Huang, Marcin Krynski, Ping Miao, Haixue Yan, Isaac Abrahams
Summary: The BIMEVOXes are excellent oxide ion conductors at low and intermediate temperatures due to their high conductivity associated with local defect structure. The local structures of two BIMEVOX compositions, Bi2V0.9Ge0.1O5.45 and Bi2V0.95Sn0.05O5.475, were examined using total neutron and X-ray scattering methods, revealing different coordination environments for Ge and Sn at different temperatures.
CHEMISTRY OF MATERIALS
(2023)
