ACS Applied Electronic Materials
·
2022
·
IF 4.494
Xinyu He,Tao Wang,Xudong Li,Sujit Das,Xingjun Liu,Zuhuang Chen
Piezoelectric ceramics with combined high piezoelectric performance and excellent thermal stability are important and urgently needed for actuation and sensor applications in harsh environments, such as aerospace, automotive, oil, and gas exploration industries. However, the development of such piezoceramics is still a highly challenging task because an enhanced piezoelectric response is generally accompanied by a decrease in thermal stability. Here, we report that 0.55Bi1–xSmxFeO3–0.45PbTiO3 piezoceramics exhibit a balanced trade-off between piezoelectric response and thermal stability near the morphotropic phase boundary (MPB), where piezoelectric coefficient d33 (275 pC N–1) barely changes even at a temperature as high as 320 °C and the well-squared shape P–E hysteresis loop persists even at a high temperature of 220 °C. Compared with La3+, Sm3+ has a smaller ionic radius than Bi3+ or Pb2+ and thus could be more effectively to induce MPB at a relatively low substitution level (x = 0.16–0.21). In turn, the thermal stability of the piezoceramics does not degrade significantly. Our results further demonstrate that Sm substitution induces a strong relaxor behavior in the ceramics. These results suggest that the Sm3+-doped BiFeO3-PbTiO3 ceramics hold great promise for high temperature piezoelectric applications.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED PHYSICS
·
2016
·Vol. 119
·期 6
·
IF 2.101
Shi Xin Xin,Liu Xiao Qiang,Chen Xiang Ming
The evolution of structure, ferroelectric, and piezoelectric properties in Bi 1−x Sm x Fe 0.99 Ti 0.01 O 3 ceramics was extensively investigated within the entire morphotropic phase boundary region with 0 ≤ x ≤ 0.20. A sequential phase transition of R3c-Pna2 1 -Pbnm with increasing Sm content was revealed by Rietveld refinement of the X-ray diffraction data together with the macroscopic ferroelectric measurements. Both ferroelectric and piezoelectric properties showed a great enhancement in the vicinity of the R3c/Pna2 1 (polar-to-polar) phase boundary, which should be caused by the field-induced phase transition between these two phases. Such field-induced phase transition might be essentially accompanied by a change of magnetic state, which indicated a way of controlling magnetism by means of electric field.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
Crystals
·
2024
·Vol. 14
·期 1
·91
·
IF 2.4
Fan Zhang,Hua Hao,Minghe Cao,Zhonghua Yao,Shuai Fu,Hanxing Liu
Piezoelectric ceramics with excellent piezoelectric properties and a high Curie temperature are important for numerous electromechanical devices in a broad range of temperature environments. In this work, the relaxor ferroelectric Pb(Yb1/2Nb1/2)O3end member was selected to be introduced into a BiScO3-PbTiO3high-temperature piezoelectric ceramic to reduce the dielectric loss and improve the piezoelectric properties while slightly reducing the Curie temperature. The phase structure and dielectric, ferroelectric and piezoelectric properties of 0.025Pb(Yb1/2Nb1/2)O3-(0.975−x)BiScO3-xPbTiO3(0.60 ≤x≤ 0.63) ceramics were systematically analyzed, and the best electrical properties were observed in the morphotropic phase boundary regionx= 0.61 withd33= 370 pC/N,kp= 44%,Pr= 33.9 μC/cm2. Importantly, no significant depolarization was observed in thex= 0.61 ceramic from room temperature to 290 °C, demonstrating its good thermal stability and potential applications in a wide range of temperature environments.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
JAPANESE JOURNAL OF APPLIED PHYSICS
·
2013
·
IF 1.067
Dali Wang,Zhaohua Jiang,Bin Yang,Shantao Zhang,Mingfu Zhang,Feifei Guo,Wenwu Cao
A novel xPb(Ni1/3Nb2/3)O3–(1-x)(0.30BiScO3–0.70PbTiO3) (PNN–BS–PT) ternary system was prepared by the columbite precursor method. The phase structure, microstructure, and electrical properties of ceramics of this system were investigated to identify the morphotropic phase boundary (MPB) composition of this system. The MPB with coexisting rhombohedral–tetragonal phases of PNN–BS–PT was located at approximately x=0.35, confirmed by their respective electric properties. With increasing PNN content, the coercive field EC, the Curie temperature TC, and the rhombohedral-to-tetragonal phase transition temperature TR–T were found to decrease and showed nearly linear dependences on their compositions. The enhanced properties were achieved in the MPB composition with x=0.35, which are as follows: dielectric constant εr=3160 (1 kHz), piezoelectric coefficient d33=490 pC/N, and electromechanical coupling factor kp=0.44. In addition, a large bipolar strain on the order of 0.6% was achieved for the composition when an electrical field E=40 kV/cm was applied.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
ACS Nano
·
2024
·
IF 15.8
Heng Yao,Zhaoyue Xia,Jing Wang,Huang Lin,Hui Yang,Qilong Zhang
Piezoelectric poly(vinylidene fluoride) (PVDF) and its copolymer, poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE)), have attracted considerable attention due to their potential in flexible, biocompatible energy harvesting and sensing devices. However, their limited piezoelectric performance hinders their widespread application. Inspired by the concept of morphotropic phase boundary (MPB) prevalent in high-performance piezoelectric ceramics, we successfully constructed MPB in the piezoelectric polymer P(VDF-TrFE) through size-dependent interface effects. We provided direct structural evidence using atomic force microscopy-infrared spectroscopy (AFM-IR) and significantly improved the piezoelectric performance of P(VDF-TrFE). The emergence of MPB is attributed to the interface effect induced by electrostatic interactions between ZnO fillers and the −CH2, −CF2, and −CHF groups in P(VDF-TrFE). This interaction drives a concomitant competition between the all-trans β phase (normal ferroelectric) and the 3/1 helical phase (relaxor), resulting in enhanced piezoelectric responses in the transition region. By coupling the MPB effect with a porous structure, we developed a piezoelectric nanogenerator (PENG) that surpasses the electrical output limitation of current P(VDF-TrFE)-based PENGs. The fabricated PENG exhibits superior piezoelectric outputs (6.9 μW/cm2), impressive pressure sensitivity (2.3038 V/kPa), ultrafast response time (4.3 ms), and recovery time (46.4 ms)─notably, without the need for additional poling treatment. In practical applications, the constructed PENG can efficiently generate characteristic signals in response to various human movements and harvest biomechanical energy. This work offers insight into utilizing interface-induced MPB and proposes a simple, scalable approach for developing high-performance self-polarized piezoelectric polymer films for self-powered sensing systems toward human–machine interaction.
研究领域:
材料科学
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能源技术
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 32
·15047-15056
·
IF 3.3
Ning Xie,Li Jiang,Yuanwen Hou,Hongquan Fu,Juan Zhang,Hejun Gao,Yunwen Liao
Piezocatalysis is a novel catalytic technology that has garnered significant attention from researchers in recent decades due to its ability to induce catalysis under mechanical force. In this work, a one-step solvothermal method was employed to synthesize high-crystallinity lead-free piezoelectric (Na1−xKx)0.5Bi0.5TiO3 (x = 0, 0.1, 0.2, and 0.3) materials. Their composition, structure, and piezoelectric degradation performance were analyzed in detail. X-ray diffraction (XRD) analysis revealed that the (Na0.8K0.2)0.5Bi0.5TiO3 piezoelectric material was a binary solid solution consisting of a mixture of rhombohedral (R3m) and tetragonal (P4mm) phases. Under ultrasonic vibration, the catalyst exhibited excellent degradation performance towards methylene blue (MB) solution. The reaction rate constant of (Na0.8K0.2)0.5Bi0.5TiO3 towards the MB dye was 3.51 times that of Na0.5Bi0.5TiO3 (BNT), and the degradation rate of a 10 mg L−1 MB dye solution reached 93.9% within 160 min. Free radical capture experiments demonstrated that the hole (h+) and hydroxyl radical (•OH) were the primary active species. This study provides insights into the optimization of lead-free piezocatalytic materials based on BNT.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Bing Xie,Tongtong Wang,Jinxia Cai,Qiuyu Zheng,Zhiyong Liu,Kun Guo,Pu Mao,Haibo Zhang,Shenglin Jiang
Polymer-based nanocomposites embedded high dielectric-constant (high- ε r ) ceramic fillers in high breakdown-strength (high- E b ) polymer matrix are extensively studied as the flexible dielectrics for high discharged-energy–density (high- U e ) film capacitors. Ferroelectric ceramics composition lying on the morphotropic phase boundary (MPB) show ultrahigh dielectric and polarization response, which as ceramic fillers, have great promise to enhance the U e of polymer/ceramic composites. Herein, high- ε r Pb(Zr 0.52 Ti 0.48 )O 3 (PZT) nanocubes (NCs) with MPB composition are prepared successfully via an improved hydrothermal reaction. Based on this, core–shell structured PZT@SiO 2 nanofillers are designed to reduce the uneven electric field distribution and leakage current in P(VDF-CTFE)-based nanocomposites for high E b . We demonstrate that the PZT@SiO 2 nanofillers with MPB composition can effectively resolve the paradox between ε r and E b . The prepared P(VDF-CTFE)/PZT@SiO 2 nanocomposites can display a high U e of 16.8 J/cm 3 at E b of 491 MV/m, which is substantially improved by 107% over the pristine P(VDF-CTFE). Plus, high discharging efficiency of 70% is also achieved. The superiority of the PZT@SiO 2 NCs with MPB in improving the capacitive energy density of film capacitors will be expected to provide a design paradigm for advanced polymer composites with high energy storage performance.
研究领域:
材料科学
·
能量存储
·
介电与绝缘材料
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纳米复合材料
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铁电材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）