CERAMICS INTERNATIONAL
·
2015
·
IF 2.605
J.C. Wang,P. Zheng,R.Q. Yin,L.M. Zheng,J. Du,L. Zheng,J.X. Deng,K.X. Song,H.B. Qin
Four groups of barium titanate (BaTiO 3 ) ceramics with high piezoelectric coefficient have been successfully fabricated from different raw materials. Their average grain size ( g ) dependences of the piezoelectric coefficient d 33 were systematically studied. It was found that for two groups of BaTiO 3 ceramics, d 33 firstly increases and then decreases with the increase of g , with a maximum d 33 of 449 pC/N and 501 pC/N respectively at approximately 1 µm grain size, while for the other two groups of BaTiO 3 ceramics, d 33 keeps increasing with the increase of g . The highest d 33 of 401 pC/N and 424 pC/N were obtained when g is larger than 50 µm. The experimental results indicated that piezoelectric grain size effect in BaTiO 3 ceramics may be not absolute. Possible mechanisms arising from differences in domain configuration were discussed.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Jie Wu,Gaochao Zhao,Wei Dong,Chengbing Pan,Kun Tao,Wenjuan Huang,Peng Tong,Jie Yang,Xuebin Zhu,Lihua Yin,Wenhai Song,Yuping Sun
The effects of quenching on the structural, electrical, dielectric, ferroelectric (FE), and piezoelectric properties are investigated systematically in the 0.85BiFe1-xCrxO3-0.15BaTi1-xMnxO3 (0 ≤ x ≤ 0.03) ceramics. Optimal piezoelectricity and FE Curie temperature are obtained through optimized quenching rate and temperature. Quenching effect on piezoelectricity is especially significant for the samples near morphotropic phase boundaries (MPB), which can be ascribed to quenching-induced changes in phase ratio (rhombohedral and tetragonal phase) and domain structure/defect dipole orientation. Moreover, a new poling method, that is, cooling the sample at a constant dc current across FE TC, is established to improve the piezoelectricity. This work not only reveals the possible mechanism of quenching effect on the improved piezoelectricity in the BFO-based piezoceramics (especially near the MPB) but also suggests an electric current poling strategy for improving piezoelectricity by suppressing the defect dipole effects in BFO-based and even other piezoelectrics.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 10
·1-8
·
IF 2.8
Liu Yingchun,Meng Xianghe,Shi Wenming,Deng Yuanhao,Zhang Hongjun
The high-temperature poling strategy (110 °C, 30 kV/cm, 20 min) was imposed on Cu-doped (Ba 0.94 Ca 0.06 )(Zr 0.05 Ti 0.95 )O 3 ceramics which had the Curie temperature of 117 °C, to enhance the piezoelectric performances. The high-temperature poled piezoelectric constants d 33 and electromechanical coupling factors k p were 410 pC/N and 0.516, which were enhanced by 17.1% and 15.4%, respectively, higher than that of traditional poled ones. Effects of high-temperature poling on the switching characteristic between non-180° and 180° domains were verified by the intensity ratio of splitting peaks at 2 θ around 45°, using the X-ray diffraction analysis. The high-temperature poled samples showed more asymmetric hysteresis loops, with higher internal bias field of 1.8 kV/cm, maximum polarization of 18.5 μC/cm 2 , and residual polarization of 10.7 μC/cm 2 , but lower coercive field of 2.5 kV/cm and smaller positive hysteresis of 1.3%. The high-field piezoelectric constant d 33 * showed a pronounced jump of 112.2 pm/V at 110 °C, confirming the optimal poling temperature. The stronger compensating defect dipole field mainly contributed to the asymmetry. And the tiny and easily reversible domains, observed by the in-situ piezoelectric force microscopy, were responsible to the improvement on piezoelectricity.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Advanced Dielectrics
·
2022
·
IF 0
Xudong Qi,Kai Li,Lang Bian,Enwei Sun,Limei Zheng,Rui Zhang
Relaxor-based ternary Pb( In 1 / 2 Nb 1 / 2 )O 3 –Pb( Mg 1 / 3 Nb 2 / 3 )O 3 –PbTiO 3 (PIN–PMN–PT) single crystals and ceramics are promising candidates for high-performance electromechanical conversion devices. It is known that the domain structure and dielectric diffusion–relaxation characteristics are crucial to the excellent performances of relaxor ferroelectrics. In this work, we prepared the PIN–PMN–PT ceramics with various PIN/PMN proportions and systematically investigated their domain structure and dielectric diffusion–relaxation properties. The effect of PIN/PMN proportion on the domain size and dielectric diffusion–relaxation characteristics was also studied. The investigations showed that PIN–PMN–PT ceramics presented multi-type domain patterns comprising irregular island domains and regular lamellar domains. Moreover, the dependent relations of PIN/PMN proportions on the dielectric diffusion and domain size indicated that the PIN composition has a stronger lattice distortion than PMN composition; increasing the PIN proportion can enhance the dielectric diffusion and decrease the domain size. Our results could deepen the understanding of structure–property relationships of multicomponent relaxor ferroelectrics and guide the design and exploration of new high-performance ferroelectric materials.
研究领域:
材料科学
·
凝聚态物理
✓ 已验证
DOI
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Yuanshui Liu,Feng Luo,Denghui Jiang,Linzhuang Xing,Liwei Song,Zhimin Li
Lead-based Pb(Zr, Ti)O 3 ceramics have been widely applied in piezoelectric actuators, and yet high temperature stability and large strain have been pursued for further application. In this work, a novel PbZrO 3 –PbTiO 3 -(Bi 0.5 Na 0.5 )TiO 3 (PZ-PT-BNT) piezoelectric ceramic is designed and prepared by solid-state route. It is found that the introduction of BNT constituent enhances the relaxation behavior of PZ-PT ceramic, inhibits the abrupt change in dielectric properties near Curie temperature , and increases the proportion of tetragonal phase with high temperature stability. Meanwhile, the patterns of electric domains are intentionally modified by adjusting composition of PZ-PT-BNT. Short and broad electric domains in PZ-PT-0.03BNT ceramic are observed by piezoresponse force microscopy, which are insensitive to temperature and have faster response under electric field, contributing to strain characteristics. As a result, through integrating phase structure and electric domain configuration, a strain of 0.21% and excellent temperature stability where the variation of strain is less than 8% in the temperature range of 25–250 °C are achieved in PZ-PT-0.03BNT ceramic. The findings provide an effective strategy for improving the strain stability of PZ-PT-based piezoelectric ceramics, and demonstrate that PZ-PT-BNT ceramics have potential application prospects in high-temperature piezoelectric actuators.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2025
·Vol. 18
·期 8
·1801
·
IF 3.2
Qian Wang,Lin Zhang,Rui Li,Hui Yang,Chuanhui Wang,Zhao Xiong,Chunwu Liu
The excellent temperature stability and high saturation polarization of Bi0.5Na0.5TiO3(BNT) make it a promising candidate for energy storage capacitors. However, its disadvantages, such as low breakdown strength, high remnant polarization, and a complex sintering process, limit its further development. To address this, (1 −x) Bi0.5Na0.5TiO3−x Sr(Mg1/3Nb2/3)O3ceramics were fabricated, where ion doping was employed to modify the domain structure, reduce the grain size, and improve the energy storage performance. With the increase in dopant concentration, the evolution from long-range-ordered ferroelectric micro-domains into short-range-ordered randomly oriented polar nanoregions (PNRs) was revealed, as demonstrated by XRD and Raman spectroscopy. This resulted in a diffuse phase transition peak and a significant reduction in remnant polarization. However, the saturation polarization also decreased. Finally, the optimal energy storage performance was achieved at a medium dopant concentration (x= 0.10), accompanied by reduced grain size and a dense microstructure. This composition exhibited a discharged energy density of 1.64 J/cm3at a low electric field of 150 kV/cm, representing a notable improvement over pure BNT, which showed a highly lossy P-E loop and a discharged energy density of only 0.14 J/cm3at the same electric field.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Ying Lu,Xiaochun Wang,Peng Li,Juan Du,Peng Fu,Jigong Hao,Wei Li
Ceramic capacitors having great energy-storage performance (ESP) are receiving more and more concern in the electronics industry. In this paper, high ESP is obtained in 0.6Bi 0.5 Na 0.5 TiO 3 –0.4Bi 0.2 Sr 0.7 TiO 3 (BNT-BST)-based samples through doping the Sr(Sc 0.5 Nb 0.5 )O 3 (SSN) component. The results show that the recoverable energy density ( W rec ) and efficiency ( η ) of the materials will be significantly improved by adjusting the relaxation characteristics and domain structure engineering. In addition, the breakdown filed of ceramics is also improved by inhibition grain growth. The BNT-BST-0.15SSN ceramic has achieved high comprehensive ESP ( W rec = 5.49 J/cm 3 , η = 93.6 %) at an electric field of 455 kV/cm. Meanwhile, the ceramic shows outstanding temperature (25–160 °C), frequency (1–500 Hz) and cycle (1–10 4 ) stability (the variation of W rec / η < 5 %). Therefore, the BNT-BST-0.15SSN ceramic is expected to be a suitable candidate of environmentally friendly materials as advanced pulsed capacitor application.
研究领域:
材料科学
·
功能陶瓷
·
电介质物理
·
能源存储
·
电子材料
✓ 已验证
DOI
高影响因子
ADVANCED POWDER TECHNOLOGY
·
2022
·
IF 4.969
Xubin Li,Yaqiang Dong,Shouding Wu,Ronglin Zhao,Qian Ding,Xingjie Jia,Aina He,Jiawei Li,Xincai Liu
In this work, transverse magnetic field annealing (TA) was performed to FeSiBNbCu nanocrystalline powder cores (NPCs), and the magnetic properties, microstructure, and magnetic domain structure were in detail studied comparing with those after normal annealing (NA), and the mechanism of the improvement of soft magnetic properties by TA was elucidated. The experimental results show that the core loss of the sample is reduced by 14 % and the coercivity is reduced by 38 % after TA at 450 °C compared to the NA sample. The direct current bias performance of the TA sample is maintained at 67 % under a 100 Oe bias field. TA optimizes the soft magnetic properties of NPCs by optimizing the domain structure, reducing the formation of micro-vortex dots and broadening the size of the domain. These results can provide a good guide for optimizing the performance of NPCs with low core loss at high frequency.
研究领域:
材料科学
·
磁学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2023
·
IF 10.9
Mengdi Cheng,Dongyan Zhang,Yangxi Yan,Zhimin Li,Pangpang Wang,Ri-ichi Murakami
Piezoelectric materials with unique properties are hugely appealing for high sensitivity sensors and ultrasonic transducers. Here, Pb(Ni 1/3 Nb 2/3 )O 3 -Pb(Yb 1/2 Nb 1/2 )O 3 -PbTiO 3 piezoelectric system was designed and investigated in detail. The optimized piezoelectric response ( d 33 = 826 pC/N, d 33 * = 1017 pm/V) together with good temperature stability and negligible performance degradation up to 10 6 cycles was achieved in 0.58PNN-0.10PYN-0.32PT composition. Rayleigh analysis revealed the amplification of intrinsic and extrinsic contributions in MPB region due to more spontaneous polarization orientations and an increase in chemical disorder of system after the introduction of PYN. The origin of high piezoelectric response was investigated through the combination of scanning electron microscopy and piezoresponse force microscopy. The diversity of B -site cations was shown to enhance local structural heterogeneity, weaken long-range ferroelectric ordered domains, and lower free energy barrier via the formation of nanodomain configuration that promoted polarization rotation, thereby improving piezoelectric properties of the material. Therefore, it is suggested that increasing the diversity of B -site cations is an effective strategy for achieving outstanding piezoelectric performance.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Yingzhi Meng,Zhaojie Wang,Xiang Niu,Yuleng Jiang,Peng Nong,Silin Tang,Jiyang Xie,Wanbiao Hu,Dingyuan Wang,Biaolin Peng,Shengguo Lu,Laijun Liu
The development of high-performance electrocaloric effect (ECE) is of great importance for local refrigeration (such as chip and wearable electronics cooling, etc.). However, how to simultaneously achieving both a large ECE and a wide working temperature range near the room temperature are long-term challenges for lead-free ceramics. Herein, we report a novel lead-free ceramic with a high-performance ECE. Phase coexistence and optimized ferroelectric domain configuration and ultra-fine grains were constructed by {Nb 5+ , In 3+ } co-doping in B 0.9 Ca 0.1 TiO 3 ceramics near the room temperature. Ultimately, an ultrahigh ECE of 3.0 K and a wide working temperature range of 97 K are obtained near the room temperature in the composition (B 0.9 Ca 0.1 Ti 0.89 (Nb 0.5 In 0.5 ) 0.11 O 3 ). Furthermore, the origin of the high ECE performance was elucidated by the microstructures characterized using piezoresponse force microscopy (PFM) and atomic-resolution HAADF-STEM, and the dielectric and ferroelectric properties. This work provides an innovative approach for achieving high-performance ECE.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·Vol. 51
·期 19
·28700-28709
·
IF 5.6
Zhengxiu Ma,Wenwu Cao
Obtaining a large piezoelectric coefficient and high temperature stability simultaneously in piezoelectric ceramics is a formidable challenge. By strategically designing a morphotropic phase boundary (MPB) composition with localized structural heterogeneity, 0.1 Pb(Yb 1/2 Nb 1/2 )O 3 -0.435PbZrO 3 -0.465PbTiO 3 -1mol% Sm ceramic demonstrates outstanding electromechanical performance with d 33 = 585 pC/N, k p = 0.66, T C = 365 °C, and outstanding temperature stability, the piezoelectric coefficient d 33 varies less than 10 % in the temperature range of 25–260 °C, making it a promising candidate for applications in high-temperature transducers and sensors. Our investigations revealed that the enhanced piezoelectricity originates from Sm 3+ induced intensification of relaxor behavior and structural refinement of hierarchical nanodomains, while the high temperature stability is attributed to the larger volume fraction of ferroelectric domains of the T-phase, which provide “pinning” of the nanodomains through the hierarchical domain structure.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·Vol. 50
·期 4
·6598-6605
·
IF 5.2
Wei Peng,Jianglei Chang,Bin Wang,Zhen Liu,Genshui Wang,Shuxiang Dong
The ultrahigh piezoelectric coefficient (d 33 ≥ 1000 pC/N) exhibited by piezoelectric Pb(Zr,Ti)O 3 (PZT) ceramics not only captivates researchers but also holds considerable practical value across various applications. While significant progress has been made in enhancing piezoelectricity of PZT-based ceramics, novel mechanisms need to be proposed to explain the piezoelectric behavior of new systems with ultrahigh d 33 . In this study, we initially employ LiNbO 3 as an additive to enhance the piezoelectric properties of the Pb(Ni 1 / 3 Nb 2 / 3 )O 3 –PbZrO 3 –PbTiO 3 ceramics. and the optimal performance is achieved by incorporating 1.5 mol% of LiNbO 3 into the system, resulting in an ultrahigh d 33 ∼1178 pC/N ( d 33 * ∼1560 p.m./V (@ E = 5 kV/cm)). The corresponding mechanism for this superior piezoelectric response involves the AB-site co-doping effect, especially the ( Li Pb ′ − Nb Zr / Ti ∙ ) defect dipoles formed by the introduction of LiNbO 3 . In particular, the addition of LiNbO 3 leads to a more uniform distribution of domain sizes, thereby further enhancing the ultrahigh piezoelectricity. These findings pave the way for a deeper under-standing of the origin of ultrahigh piezoelectric properties and make substantial contributions to the advancement of piezoelectric materials for practical applications in electromechanical devices.
研究领域:
材料科学
·
功能陶瓷
·
压电材料
·
固态物理
·
电子显微学
·
介电材料
·
无机非金属材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）