Article
Chemistry, Physical
Yazhu Dong, Zhiyong Zhou, Ruihong Liang, Xianlin Dong
Summary: This study reports a novel compositional design of BS-PT-xBSN ceramic and confirms the optimum electrical properties near x = 0.02. The ceramic exhibits giant piezoelectric coefficient, high Curie temperature, and large remnant polarization. Structural analysis confirms that these properties are attributed to the appearance of nano-domain and complexity of domains.
JOURNAL OF MATERIOMICS
(2022)
Article
Engineering, Electrical & Electronic
Liqing Hu, Liwen Fu, Xiaodan Ren, Shuguang Zheng, Sanhong Wang, Zhuo Xu, Yongke Yan
Summary: High-temperature ultrasonic detection technology has gained significant attention in recent years. The detection capability of conventional piezoelectric ceramics is limited at high temperatures. This study presents a new approach by doping ceramics with 0.125 mol% Nb5+, resulting in improved temperature stability and greater potential for high-temperature piezoelectric device applications.
SENSORS AND ACTUATORS A-PHYSICAL
(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
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, Ceramics
Haiyan Zhao, Xiaole Yu, Fanlin Li, Huijing Yang, Qiangqiang Guo, Zhen Zhang
Summary: The simultaneous achievement of large piezoelectricity and excellent thermal stability in a piezoceramic material is highly desired for advanced high-temperature electromechanical coupling devices. In this study, a novel zBiScO3-xBiInO3-yPbTiO3 ternary perovskite piezoceramic material was used to achieve a large high-temperature piezoelectric coefficient with a small fluctuation rate over a wide temperature range. The optimal composition of the perovskite ceramics showed excellent high-temperature piezoelectric properties and stability, making them suitable for harsh elevated temperature electromechanical coupling applications.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Lang Bian, Xudong Qi, Kai Li, Jinhui Fan, Zhanmiao Li, Enwei Sun, Bin Yang, Shuxiang Dong, Wenwu Cao
Summary: Ceramics near the triple point composition of PNN-PZ-PT fabricated by an improved two-step sintering method exhibit outstanding piezoelectric performance, making them ideal for high sensitivity sensors and ultrasonic transducers. The evolution of domain structures in ceramics near the triple point provides a deeper understanding of the ultrahigh piezoelectric properties of PNN-PZ-PT ceramics.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Pengbin Wang, Qinghu Guo, Fei Li, Fangquan Xia, Hua Hao, Huajun Sun, Hanxing Liu, Shujun Zhang
Summary: A series of Sm3+-doped ferroelectric ceramics were fabricated, with the optimum piezoelectric performance achieved at the morphotropic phase boundary composition. The synergistic contribution of MPB and local structural heterogeneity led to high piezoelectricity and temperature stability.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
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
Lingfang Zou, Zhuan Li, Zonglong Gao, Fu Chen, Wenjie Li, Yong Yu, Yimin Li, Peng Xiao
Summary: This study investigates the impact of Pr3+ doping on the ferroelectric properties of PZT ceramics, showing that it can improve piezoelectric activity and optimize performance stability. Introducing Pr3+ leads to a dense and fine microstructure, with an ideal coexistence of rhombohedral and tetragonal phases observed in the PPZT4 samples.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Hongrui Jia, Shuai Yang, Weitong Zhu, Fei Li, Linghang Wang
Summary: The crystal structure, microstructure, and properties of Sm: PMN-PT textured ceramics were investigated, revealing that Sm doping can improve piezoelectric and dielectric properties. Ceramics with 1.9 mol% Sm exhibit high piezoelectric coefficient and polarization behavior. The dielectric constants increase with Sm content, unaffected by PT content.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Applied
Mingyang Tang, Xin Liu, Yike Wang, Xiaodan Ren, Zhuo Xu, Yongke Yan
Summary: In this study, [001] textured Sm0.025Pb0.9625(Mg1/3Nb2/3)(0.74)Ti0.26O3 (Sm-PMN-26PT) ceramics were synthesized using the templated grain growth method. The dielectric, piezoelectric, and electromechanical properties of both untextured and textured ceramics were investigated. The textured ceramics showed excellent piezoelectric properties, with a high d(33) coefficient of 1882 pC/N and an extremely high d(33)* of 2510 pm/V at room temperature. The improvement in piezoelectric properties was attributed to the increase in dielectric constant e(33) and electrostriction coefficient Q(33) in the textured ceramics.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Chemistry, Physical
Shiyi Zhang, Mengdi Cheng, Yangxi Yan, Zhimin Li, Pangpang Wang, Ri-ichi Murakami, Dongyan Zhang
Summary: In this study, Nd3+ ions were introduced into PNN-PHT ceramics through the solid-state method, resulting in excellent piezoelectric and dielectric properties. The optimized piezoelectric coefficient, dielectric constant, electromechanical coupling factor, and dielectric loss were found to be 1125 pC/N, 8667, 0.66%, and 1.94% respectively. The extrinsic contribution to the piezoelectricity of the Nd-doped PNN-PHT ceramics was found to be up to 19% in the optimal region.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Yang Li, Marcell Borbely, Andrew Bell
Summary: The study on 0.71Pb(Mg1/3Nb2/3)O-3-0.29PbTiO(3) doped with 2.5% Sm on the A-site shows a significant increase in piezoelectric performance, a reduction in conductivity, and a decrease in oxygen vacancy concentration. The nonlinearity of permittivity with respect to field amplitude increases significantly with Sm doping, with both reversible and irreversible contributions also increasing significantly.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Xudong Qi, Kai Li, Enwei Sun, Bingqian Song, Da Huo, Jiaming Li, Xianjie Wang, Rui Zhang, Bin Yang, Wenwu Cao
Summary: This study investigates the anomalous photovoltaic effect of relaxor-based ferroelectric PIMN-PT ceramics, achieving excellent photovoltaic performance with an ultrahigh open-circuit voltage. The results suggest that PIMN-PT ceramics are a potential candidate for photovoltaic solar energy conversion devices.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Kai Li, Shan Cong, Huashan Zheng, Ting Wang, Zhenting Zhao, Xudong Qi, Weiping Gong
Summary: Piezoelectric energy harvesting has gained widespread attention but is limited by the low piezoelectric voltage constant and high damping loss. This study significantly improved the energy harvesting properties of a PT-based ferroelectric ceramic material through Mn-doping defect engineering, providing an effective optimization strategy for this class of materials.
Article
Materials Science, Multidisciplinary
Kaiyuan Chen, Qi Zhang, Jia Liu, Jie Wang, Zhencheng Lan, Liang Fang, Changzheng Hu, Nengneng Luo, Biaolin Peng, Changbai Long, Dawei Wang, Laijun Liu
Summary: This study reveals the coexistence of re-entrant relaxor behavior and ferroelectric-paraelectric transition in complex perovskite oxide, and describes two dielectric anomalies using a phenomenological statistical model. The sizes of two types of PNRs corresponding to different ferroelectric states were determined, and the dynamics of PNRs were analyzed using isothermal electrical modulus.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
Jing Shi, Xiao Liu, Fangyuan Zhu, Wenchao Tian, Yuanhua Xia, Tangyuan Li, Rongrong Rao, Tao Zhang, Laijun Liu
Summary: This study comprehensively investigates the structural characteristics and electrical performance of off-stoichiometry perovskite structural Bi0.5Na0.5TiO3 (BNT) ferroelectrics. The research reveals significant structural evolution and its influence on the ion migration ability, as well as the subtle distortions of ionic displacements, oxygen octahedral tilts, and local chemical environments for oxygen vacancies. These findings provide insights for designing BNT based oxide ion conductors with superior oxide ionic conductivity.
JOURNAL OF MATERIOMICS
(2022)
Article
Nanoscience & Nanotechnology
Yang Zhang, Nengneng Luo, Deqian Zeng, Chao Xu, Li Ma, Gengguang Luo, Yixin Qian, Qin Feng, Xiyong Chen, Changzheng Hu, Laijun Liu, Toyohisa Fujita, Yuezhou Wei
Summary: This study demonstrates that ferroelectricity and Schottky heterojunction engineering can greatly enhance the piezo-photocatalytic activity of AgNbO3, providing a promising catalyst for degrading organic contaminants.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Ceramics
Caige Liu, Shuangfeng Wu, Laijun Liu, Xiuyun Lei, Jungu Xu, Jibran Khaliq, Chunchun Li
Summary: A low temperature fired Na2CaV4O12 ceramic with low relative permittivity and loss tangent was synthesized via a solid-state reaction route. The research revealed a dielectric anomaly peak at high temperatures and provided insights into the electrical conduction mechanism.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Hui Liu, Zheng Sun, Shengdong Sun, Yueyun Zhang, Huajie Luo, He Qi, Laijun Liu, Joerg C. Neuefeind, Xianran Xing, Jun Chen
Summary: This study investigates the local structure of lead-based relaxor ferroelectrics using neutron total scattering combined with reverse Monte Carlo modeling. The results reveal the existence of ordered/disordered features and forced behavior of polar vectors in the material. The study provides insights into the polarization behavior of relaxor ferroelectrics, laying a foundation for understanding their unique properties.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Yongbao Cui, Chunchun Li, Xiuyun Lei, Fengrong Li, Haochen Sun, Zhaojie Wang, Suning Wang, Biaolin Peng, Dawei Wang, Feng Yan, Tianxiang Yan, Laijun Liu
Summary: In this paper, an effective strategy to overcome the trade-off between piezoelectric coefficient and the Curie temperature is proposed by co-doping K+ and Nb5+ ions at A/B sites, achieving a combination of high TC and d33 in BiFeO3-BaTiO3-based ceramics. The MPB region is confirmed in a narrow range of x = 0.0075-0.01 by the Rietveld refinement of XRD patterns and Raman spectroscopy deconvolution. An optimized composition with 1 mol% K/Nb co-dopants possesses a high Curie temperature (TC = 604 degrees C) along with d33 = 163 pC/N, kp = 43 %, Pr = 57.94 mu C/cm2, and Ps = 68.18 mu C/cm2. An outstanding thermal stability to 540 degrees C is verified via the temperature dependence of d33 and in situ Raman spectroscopy. This work not only provides a potential lead-free candidate material for high-temperature piezoelectric applications, but also offers a feasible strategy to design high-temperature dielectrics by exploiting site engineering.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Xinjian Ouyang, Yuan Zhuang, Jiale Zhang, Feng Zhang, Xiao Jie, Weijia Chen, Yanxing Zhang, Laijun Liu, Dawei Wang
Summary: This study employs graph-based message-passing neural networks (MPNNs) to investigate the temperature-dependent structural phase transitions of perovskites. The well-trained MPNN models achieve a similar level of accuracy as density functional theory (DFT) calculations in terms of both energy and force, enabling the study of structural changes in perovskites.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Physics, Condensed Matter
XueRui Qiang, XiaFeng He, Hu Nan, Kaiyuan Chen, Xiuyun Lei, Dawei Wang, Congling Yin, Xue Chen, Lixian Sun, Laijun Liu
Summary: In this study, the relationship between the local phase structure and ferroelectric properties of BaBi2Ta2O9 ceramic was investigated using dielectric spectrum analysis. The polarization response and size of Polar nanoregions (PNRs) were described using a statistical model. Element segregation and lattice distortion were directly observed using TEM, which were associated with the substitution of multiple atoms for the one cation occupation.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Chemistry, Multidisciplinary
Min Peng, Chang Nan, Dawei Wang, Meng Cao, Liang Zhang, Laijun Liu, Chunliang Liu, Dangqi Fang, Yiqi Zhang, Yonggui Zhai, Yongdong Li
Summary: This study investigates the impact of a monolayer of graphene on the secondary electron emission (SEE) of an Ni (111) surface through theoretical calculations and experimental analysis. The results show that the redistribution of electron density at the graphene/Ni (111) interface leads to variations in the work function and probability of SEE. Experimental measurements confirm a significant decrease in the secondary electron yield (SEY) on the Ni (111) surface covered with graphene, consistent with the correlation between work function and SEY in metals.
Article
Materials Science, Ceramics
Hao Hu, Jian Zhuang, Yunxiang Weng, Nan Zhang, Boyang Wang, Dawei Wang, Guobao Feng, Wei Ren
Summary: This study explores the structure and electrical properties of rare earth Nd- and PbTiO3 co-modified BFO ceramics, and establishes a preliminary ferroelectric phase diagram. Ferroelectric switching with giant ferroelectric polarization above 65 μC/cm2 is achieved without quenching treatment. The MPB compositions exhibit the maximum piezoelectric coefficients and the lowest coercive field, indicating the softening effects. Domain evolutions suggest the coexistence of two phases distributing separately in different grains in the MPB composition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Xinjian Ouyang, Weijia Chen, Yanxing Zhang, Feng Zhang, Yuan Zhuang, Xiao Jie, Laijun Liu, Dawei Wang
Summary: In this work, a novel approach using message-passing neural networks (MPNNs) is proposed to model the potential energy surface (PES) of metal-halide perovskites. The MPNN model can accurately learn the PES of perovskites with an error of less than 1 meV per atom. The accurate predictions of the MPNN model are used to perform large-scale molecular dynamics simulations and provide insights into the structural phase transition and ion migration in metal-halide perovskites.
Article
Materials Science, Multidisciplinary
Yanxing Zhang, Jiale Zhang, Nan Zhang, Laijun Liu, Alexei A. Bokov, Zuo-Guang Ye, Dawei Wang
Summary: This study reveals a hierarchical ordering in lead-based relaxor ferroelectric perovskites, enriching our understanding of the complex nature of the chemical ordering in these materials.
Article
Materials Science, Multidisciplinary
Kaiyuan Chen, Tianxiang Yan, Jia Liu, Xiuyun Lei, Liang Fang, Biaolin Peng, Senentxu Lanceros-Mendez, Dawei Wang, Laijun Liu, Qi Zhang
Summary: This study reveals the mechanism of high dielectric thermal stability in 0.6BMT-0.4BCZT ceramics by using in situ XRD, in situ Raman, TEM and dielectric responses. The formation and freezing of polar nanoregions (PNRs) and nanomosaic structures (NMSs) consisting of ferroelectrically active phases are found to be responsible for the high thermal stability. Phenomenological statistical model analysis shows low-temperature re-entrant dipole-glass-like relaxor behavior, mid-temperature diffuse phase transition, and high-temperature local phase transitions. The relaxor behavior follows the Vogel-Fulcher law and the new glass model. P-E loops characterization confirms the dipole-glass-like relaxor nature of 0.6BMT-0.4BCZT.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
