Journal of Advanced Dielectrics
·
2022
·
IF 0
Chuan Chen,Yan Wang,Jiajiu Li,Chaofeng Wu,Guanrong Yang
A series of (100 − x ) Pb(Mg 1 / 3 Nb 2 / 3 ) O 3 − x PbTiO 3 (PMN − x PT, x = 24, 25, 26) ceramics were prepared by solid-state reaction technique using MgNb 2 O 6 precursor. The results of the detailed characterizations reveal that the content of PT has negligible influence on the grain size, and all samples possess the perovskite structure. As the PT content increases, the samples changed from the normal ferroelectric phase to the ergodic relaxor state at room temperature. As a result, PMN– x PT ceramics are endowed with electro-strain of 0.08% at a relatively low electric field of 2 kV/mm, and effective piezoelectric coefficient of 320 pm/V was obtained. Simultaneously, the PMN– x PT ceramics have exceptional pyroelectric performance, exhibiting a high pyroelectric coefficient p ∼ 5.5 – 6.3 × 10 − 8 C⋅cm − 2 ⋅K − 1 . This study demonstrates the great potential of PMN– x PT for piezoelectric and pyroelectric device applications.
研究领域:
材料科学
·
物理学
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产品关联
DOI
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2019
·Vol. 30
·期 20
·18950-18958
·
IF 2.195
Fu Mingtao,Li Caixia,Yang Bin,Liu Danqing,Bian Lang,Hong Yuenan,Zhang Changhai,Chen Chuntian,Lin Jiaqi
The Ba 0.985 Ca 0.005 Ti 0.98 Sn 0.02 O 3 + x mol% MnO 2 (BCTSM x , x = 0, 0.2, 0.3, 0.4, 0.5 and 0.6) ceramics were fabricated by conventional solid-state reaction method. The effects of MnO 2 doping on the phase structure, microstructure, dielectric, ferroelectric and piezoelectric properties of Ba 0.985 Ca 0.005 Ti 0.98 Sn 0.02 O 3 ceramics were investigated systematically. X-ray diffraction patterns revealed that the BCTSM x ceramics are composed of coexisting tetragonal-orthogonal phases. The addition of MnO 2 could significantly improve the sinterability of BCTS ceramics. The BCTSM x ceramics with x = 0.4 demonstrated an optimum electrical properties: ε r = 2802, tan δ = 0.081, T C = 121 °C, ε max = 9977, P r = 11.8 μC/cm 2 , E C = 2.6 kV/cm, bipolar S max = 0.25%, unipolar S max = 0.28%, d
* 33
= 1093 pm/V, d 33 = 325 pC/N, k p = 43.2%, and Q m = 118.
研究领域:
材料科学
·
无机非金属材料
✓ 已验证
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2016
·Vol. 99
·期 7
·2354-2360
·
IF 2.787
Dong-Sheng Yin,Zhi-Hao Zhao,Ye-Jing Dai,Zhe Zhao,Xiao-Wen Zhang,Si-Hui Wang
By conventional ceramics sintering technique, the lead-free 0.85Bi 0.5 Na 0.5(1− x ) Li 0.5 x TiO 3 -0.11Bi 0.5 K 0.5 TiO 3 -0.04BaTiO 3 ( x =0–0.15) piezoelectric ceramics were obtained and the effects of Li dopant on the piezoelectric, dielectric, and ferroelectric properties were studied. With increasing Li addition, the temperature-dependent permittivity exhibited the normal ferroelectric-to-ergodic relaxor (FE-to-ER) transition temperature ( T FE - ER , abbreviated as T F-R ) decreasing down to room temperature. The increasing Li content also enhanced the diffuseness of the FE-to-ER transition behavior. For composition with x = 0.15, a large unipolar strain of 0.37% ( = S max / E max = 570 pm/V) was achieved under 6.5 kV/mm applied electric field at room temperature. Both unipolar and bipolar strain curves related to the temperature closely, and when the temperature reached the T F-R , the normalized strain achieved a maximum value (e.g., for x = 0.10, = 755 pm/V) owing to the electric-field-induced ER-to-FE state transition.
研究领域:
材料科学
·
电子工程
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产品关联
DOI
高影响因子
Journal of Advanced Dielectrics
·
2023
·
IF 3.1
Hailan Qin,Jianwei Zhao,Xiaoxin Chen,Hongtian Li,Shenghao Wang,Yuxiao Du,Peifeng Li,Huanfu Zhou,Dawei Wang
BiFeO 3 –BaTiO 3 is a promising lead-free piezoelectric ceramic, exhibiting high Curie temperature and superior electrochemical characteristics. In this work, ( 1 − x ) BiFeO 3 – x BaTiO 3 (BF– x BT, x = 0 . 2 6 , 0.28, 0.30, 0.32, 0.34, 0.36) ceramics were fabricated using the conventional solid-state reaction method through precise composition control. Multiple characterization techniques, including X-ray powder diffraction (XRD), scanning electron microscope (SEM), and electrical property testing systems, were applied to systematically examine the crystallographic structure, microstructure, as well as the dielectric, ferroelectric and piezoelectric properties of the BF– x BT ceramics. The XRD results confirm that all compositions exhibit a typical perovskite structure, transitioning from a single rhombohedral phase to a rhombohedral–cubic phase mixture as the BT content increases. SEM shows apparent core–shell microstructures in the ceramics. Notably, the results demonstrated that the BF–0.30BT ceramic exhibits the maximum piezoelectric constant ( d 3 3 ) ∼ 2 1 7 pC/N, while the BF–0.34BT ceramic displays the maximum converse piezoelectric constant ( d 3 3 ∗ ) ∼ 3 2 3 pm/V, which highlights the suitability of BF–BT ceramics for high-performance piezoelectric applications.
研究领域:
材料科学
·
物理学
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DOI
高影响因子
Materials Research Express
·
2018
·Vol. 5
·期 3
·036305
·
IF 1.151
Gang Liu,Ziyang Wang,Leiyang Zhang,Wenjing Shi,Jiayi Jing,Yi Chen,Hongbo Liu,Yan Yan
MgO doped NBT-BT ceramics were prepared by the conventional electroceramic processing. The effects of MgO on the phase, microstructures and electrical properties of NBT-BT ceramics were systematically investigated. When doping content is more than 1%, a second phase appeared, which has great effect on dielectric, ferroelectric, and piezoelectric properties, such as the TF-R peak weakened, moved to the higher temperature, and eventually disappeared. When the doping content is above 1.5%, the ceramic samples show a strong relaxation. The detailed analysis and discussion can be found within this study.
研究领域:
材料科学
·
无机非金属材料
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2016
·
IF 3.014
Huajun Sun,Saihong Duan,Xiaofang Liu,Dawei Wang,Huiting Sui
Lead-free Ba 0.98 Ca 0.02 Zr 0.02 Ti 0.98 O 3 -xmol% MnO 2 (BCZT-xMn) (x = 0.1, 0.2, 0.3, 0.4, 0.5) ceramics were prepared by conventional solid-state reaction method and the effects of MnO 2 doping content and sintering temperature on microstructure and electrical properties of BCZT ceramics were studied. The ceramics samples with all MnO 2 doping contents exhibit pure perovskite structure and similar Curie temperature of approximately 120 °C. Among all, the sample with 0.3 mol. % MnO 2 doping content sintered at 1400 °C exhibits improved ferroelectricity with a relatively high remnant polarization ( P r ) and low coercive electric field ( E c ) of 15.7 μC/cm 2 and 180 V/mm, respectively, which can be attributed to the fact that an appropriate doping content of MnO 2 does favor to the grain growth, with the favorable effect on domain motion. Accordingly, excellent piezoelectric property with piezoelectric coefficient ( d 33 ) of 308 pC/N can be obtained. Besides, the sample shows a relatively low dielectric loss (tanδ) of 1.04%. As a result, the BCZT-xMn ceramic exhibits the potential to be used in memory and transformer applications.
研究领域:
材料科学
·
电子工程
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DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2024
·Vol. 107
·期 6
·4232-4241
·
IF 3.5
Xiaoxin Chen,Hailan Qin,Hongtian Li,Yuxiao Du,Shenghao Wang,Peifeng Li,Yongming Hu,Laijun Liu,Jianwei Zhao,Dawei Wang
In many studies, the properties of BiFeO 3 –BaTiO 3 (BF–BT) ceramics vary greatly using different raw reagents, which makes it challenging to obtain reliable and repeatable properties of BF–BT-based devices. In this work, 0.7BiFeO 3 –0.3BaTiO 3 (0.7BF–0.3BT) ceramics were fabricated by a conventional solid-phase synthesis using TiO 2 reagents with varied purities of 98%, 99%, 99.9%, and 99.99%, respectively. The phase structure, microstructure, ferroelectric, and piezoelectric properties were comprehensively studied. All compositions of the ceramics exhibit a pseudo-cubic phase perovskite structure, and the fraction of the rhombohedral phase increases with increasing the TiO 2 purity. Additionally, backscattered electron images and energy-dispersive spectroscopy revealed an obvious core–shell structure within grains. In particular, the 0.7BF–0.3BT ceramics prepared with 98% purity TiO 2 exhibited superior ferroelectric and piezoelectric properties, d 33 ∼ 220 pC/N and d 33 ∗ $d_{{\mathrm{33}}}^{\;*}$ ∼ 230 pm/V. The ceramics prepared with higher purity TiO 2 suffered from severe leakage conduction, which can be well addressed by adding excess TiO 2 . Our work reveals the importance of different grades of purity TiO 2 on the electrical properties of BF–BT ceramics.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yue Shen,Zheng Li,Ying Liu,Jing Tao Wang
Polyvinylidene fluoride (PVDF) has attracted significant attention for its unique piezoelectric and ferroelectric properties. However, traditional processing primarily results in the non-polar α phase, limiting its applications. This study prepared PVDF films via solution casting followed by rolling at various temperatures to promote the transition to the β phase. High-temperature rolling significantly enhanced the β phase content, improved the microstructure and orientation of the films, and markedly enhanced the piezoelectric and ferroelectric properties. Particularly, the films rolled at 90 °C exhibited a higher relative content of the β phase, showing exceptional piezoelectric performance with a d 33 value of 26 pC/N and ferroelectric properties with a remanent polarization (P r ) of 13.69 μC/cm 2 . Additionally, hot rolling at higher temperatures notably improved the mechanical properties, enhancing both tensile strength and elongation at break. The optimized PVDF films present broad application prospects in areas such as sensors. This study provides a method and theoretical guidance for the preparation of high-performance PVDF-based functional materials.
研究领域:
材料科学
·
传感器技术
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产品关联
DOI
高影响因子
KEY ENGINEERING MATERIALS
·
2014
·
IF 0
Gang Chen,Xiao Dong Peng,Chun Lin Deng,Chun Lin Fu,Wei Cai,Chun Yan Deng,Xiao Shuang Li
The La2Ti2O7+xwt%ZnO(x=0, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5) ceramics were prepared by the conventional solid state reaction method, and effects of ZnO doped on the structure, dielectric and ferroelectric properties were investigated in detail. The X-ray diffraction patterns of La2Ti2O7 ceramics doped by ZnO oxide showed that no second phase exists. The surface morphology is palte-like shape, the grains of La2Ti2O7 ceramics increase with increasing the content of ZnO, and the result is to improve the density of La2Ti2O7 ceramics. The dielectric constant and loss decreases with increasing frequency.When the content of ZnO is more than 0.05wt%, the dielectric constant and loss decreases with the amount of addition of ZnO oxide increasing. The ferroelectric hysteresis loop is not saturable, which is attributed to its large leakage current. The ferroelectric properties improve with the addition of ZnO oxide. .
研究领域:
材料科学
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物理学
✓ 已验证
DOI
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Mengyuan Yu,Guifen Fan,Yingkang Li,Xile Ling,Feng Gong,Gang Liu,Jiaming Bai,Mantian Li,Peng Zhou,Dongyang Zhang,Lining Sun
Achieving the synergy of low viscosity, high printing precision and enhanced curing ability for lead zirconate titanate (PZT) components is a critical issue in the field of digital light processing (DLP). Herein, the effect of calcination temperature on the morphology and grain size of PSNZT [(Pb 0 . 92 Sr 0 . 08 )(Zr 0 . 533 Ti 0 . 443 Nb 0.024 )O 3 ]ceramic powder has been investigated, and a lowest viscosity, higher printing precision and enhanced curing ability of PSNZT ceramic slurry has been achieved, resulting in a high piezoelectric constant (d 33 = 379pC/N) and a high dielectric constant (εr = 1308@100 KHz) via DLP process combined with following sintering densification (1220 °C/3 h).
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
FERROELECTRICS
·
2014
·
IF 0.433
Lian Xiang,Gang Chen,Chunlin Fu,Wei Cai,Wei Wang,Kaihua Liu
Sr2(TaxNb1-x)2O7 (x = 0.0, 0.1, 0.2, 0.4) (STNO) ceramics were prepared by the conventional solid-state reaction method. The microstructure, dielectric and ferroelectric properties of the samples were investigated. The results show single phase STNO with perovskite-like layered structure and that Ta5+ ion can diffuses into the crystal lattice. The addition of Ta5+ dopant decreases the grain size of the material. The dielectric constant increases with increased x, and the sample with x = 0.2 exhibits enhanced dielectric properties (ϵr ≈ 56, tanδ ≈ 0.01%). The remnant polarization (2Pr) and coercive electric field (2EC) of STNO ceramics increase with increasing Ta content, and reach the maximum value (2Pr = 0.11μC/cm2 and 2EC = 5.75 kV/cm) at x = 0.4. Our results indicate that Ta doping can effectively improve the dielectric and ferroelectric properties of Sr2Nb2O7 ceramics.
研究领域:
材料科学
·
电子材料
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Dashuang Fu,Fang He,Haiyi Tian,Jiahao Li,Jieming Zhang,Zheng Kang,Yunkai Wu,Xu Wang
The development of lead-free dielectric capacitors with high recoverable energy storage density and high energy storage efficiency is important for improving the overall performance of electronic and power systems. BaTiO 3 (BTO) is one of the most common ferroelectric materials and has attracted much attention for energy storage applications in the past decades due to its excellent dielectric and ferroelectric properties. However, high remnant polarization and low electrical breakdown strength of BTO limit its development in energy storage applications. Many efforts (e.g., elements doping, interface/heterostructure, etc.) have been made to improve the energy storage density of BTO thin films. In this paper, Ba 1-x Ni x TiO 3 thin films (x = 0, 0.02, 0.04, 0.06, 0.08; abbreviated as BN x T) were synthesized via sol-gel and spin-coated method. The effect of Ni doping on the structural, dielectric, ferroelectric and energy storage properties of BTO thin films has been studied. The results confirmed that with the increase of Ni doping, a second phase arises and the dielectric constant decreases. While appropriate Ni doping led to the improvement of the breakdown strength, further increase of Ni deteriorated the energy storage because of the high oxygen vacancy. Finally, optimized energy storage performance was obtained for BN 0.04 T thin film: dielectric constant of 401, dielectric loss of 0.002, recoverable energy density of 20.2 J/cm 3 and energy storage efficiency of 83.6% at 965 kV/cm. Meanwhile, the remnant and maximum polarization of the films were 0.06 μC/cm 2 and 50 μC/cm 2 , respectively. BN 0.04 T thin film has an excellent application prospect and is expected to appear as a component in the future composite energy storage film system.
研究领域:
材料科学
·
电子工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）