JOURNAL OF RARE EARTHS
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2022
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IF 4.632
Zhixiong Song,Jizhen Liu,Liyan Xue,Zhengming Jiang,Fan Yang
In this work, neodymium (Nd) and samarium (Sm) codoped lead lanthanum zirconate titanate (PLZT) ceramics were prepared by a high-temperature solid-state method. The samples were characterized by X-ray diffraction, scanning electron microscopy and ferroelectric analysis. Rare earth-doped PLZT ceramics show good phase formation. An appropriate rare earth element doping amount increases the densities of PLZT ceramics and reduces their resistivities, which is due to the role of rare earth elements in grain refinement. However, the increase in the amount of grain boundaries caused by grain refinement also affects domain inversion. Therefore, with increasing doping concentration, the remnant polarization of PLZT gradually decreases, and the doping of rare earth elements also slightly reduces the band gap of PLZT. Under irradiation with an X-ray simulated beta source with a particle energy of 10 keV (between the average energies of the beta particles of 3 H and 63 Ni), the ceramic sheets in this work produce current densities of up to 1.38 nA/cm 2 . This indicates that Nd and Sm codoped PLZT ceramics have a certain potential for application in betavoltaic batteries .
研究领域:
材料科学
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核能工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2018
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IF 3.794
Biao Lu,Yingbang Yao,Xiaodong Jian,Tao Tao,Bo Liang,Q.M. Zhang,Sheng-Guo Lu
The electrocaloric effect (ECE) in gadolinium and tin ions doped lead lanthanum zirconate titanate ceramics was investigated. Five samples with different compositions and hence different relaxor behaviors and polarization properties were prepared via a conventional solid-state reaction process. The ECE was measured directly by a high resolution thermometer from 293 K to 423 K. The results show that the ECE is mainly determined by the number of polarization states and polar-correlation strength . Furthermore, the results reveal that the temperature variation of ECE around Curie temperature is associated with the generation rate, activation energy , size and freezing temperature of polar nanoregions. As a result, Sn doped PLZT composition exhibits the best ECE, i.e. , a peak ΔT > 2 K obtained at 5 MV/m, and ΔT > 1.78 K achieved in the whole temperature range measured at the same field, which are very attractive for high performance ECE devices.
研究领域:
材料科学
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物理学
✓ 已验证
DOI
高影响因子
FERROELECTRICS
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2021
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IF 0.62
Huiting Liu,Chengzhi Lu,Dun Wu,Chunlin Liu,Zheng Cao,Junfeng Cheng
Acrylic resin and PLZT (Pb0.910La0.060 (Zr0.580Ti0.420)0.975Nb0.020O3.000) powder were mixed to prepare PLZT/acrylic resin thermosetting feedstock. Injection molding is used to form high-strength PLZT piezoelectric ceramic embryos then sintered to piezoelectric materials. The experimental results showed that the residual polarization is higher at 85% solid content of the feed and the d33 value increased. And the PLZT powder coated with stearic acid can improve the piezoelectric and ferroelectric properties of powder injection molded piezoelectric ceramics. Tests above are intended to provide preliminary exploration for thermal curing injection molding and thermal curing 3 D printing piezoelectric ceramics.
研究领域:
材料科学
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陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
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2018
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IF 3.057
Tian Zhao,Qingshan Zhu,Ran Xu,Jingjing Tian,Yujun Feng
Antiferroelectric ceramics are superior energy storage materials with high energy storage densities, small size, low price, etc. In this paper, with (Pb 0.96 La 0.04 )(Zr 0.9 Ti 0.1 ) 0.99 O 3 (PLZT4/90/10) as a representative, the effect of silver oxide doping on the dielectric properties of ceramics was investigated. PLZT4/90/10 ceramics prepared by the solid phase method was doped with 0 wt%, 0.1 wt%, 0.5 wt%, 1.0 wt% and 1.5 wt% of Ag 2 O, and the effect of the addition of Ag 2 O was analyzed on dielectric , energy storage and conductive properties. Ag + replaces the A-position of Pb 2+ in the lattice, which leads to generate more oxygen vacancy in the lattice. Incorporation of silver oxide improves the releasable energy storage density (W re) and the energy release efficiency (η). When the content of Ag 2 O is 1.0%, the releasable energy density reaches the maximum value of 2.22 J/cm 3 and the energy release efficiency is raised to 78.69%. The releasable energy density and the energy release efficiency are listed at different temperatures for different doping amounts. It can be seen that Ag 2 O doping can also promote the temperature stability of the energy storage density. In addition, the doping of Ag 2 O has a good effect on smoothing the temperature dependence curves of dielectric constant and improving the resistivity of ceramics of PLZT4/90/10 ceramics. As the dielectric constant, energy storage density and other aspects are concerned, Ag 2 O doping has a beneficial effect on the performance of capacitor applications for PLZT4/90/10 ceramics.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Dun Wu,Shuai Qin,Huiting Liu,Zheng Cao,Junfeng Chen,Bijun Fang,Chunlin Liu
Lead zirconate titanate-based piezoelectric ceramics (Pb 0·91 La 0·06 (Zr 0·58 Ti 0.42 ) 0.975 Nb 0·02 O 3 , PLZT) were prepared by water-soluble defatted powder injection molding using bismuth stearate as surfactant . The effects of bismuth stearate surfactant amount on the feed viscosity, water degreasing rate and electrical properties were studied. The results showed that the bismuth stearate coating reduces agglomeration between the PLZT powders and decreases the viscosity of the feed. During sintering, bismuth stearate is decomposed into bismuth oxide, which acts as sintering aid to increase the density of the sintered bismuth stearate-coated PLZT ceramics. Bi 3+ dissolves into the perovskite crystal lattice , which increases the tetragonality factor and the content of tetragonal phase, and improves the dielectric, ferroelectric and piezoelectric properties of the bismuth stearate-coated PLZT ceramics. This study provides a novel modification method for the production of injection molded ceramics using a water-soluble binder system.
研究领域:
材料科学
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陶瓷工程
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电子材料
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2025
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IF 8.2
Junhui Lang,Mingwang Yuan,Yingzhi Meng,Silin Tang,Biao Zhang,Qingqing Ke,Laijun Liu
Piezoelectric energy harvesters (PEHs) have attracted much attention due to their efficient harvesting of vibrational energy from the ambient environment, which demonstrates great potential applications. Unfortunately, their low energy density severely hinders the further development of PEHs. Therefore, it is highly desirable to search for piezoelectric materials with a high transduction coefficient (d33 × g33). In this work, an excellent d33 × g33 is achieved in Pb0.94(La0.06-xNdx) (Zr0.58Ti0.42)0.985O3 (x = 0, 0.01, 0.02, 0.03, and 0.04) (PL0.06-xNxZT) ceramics by composition modulation. The best d33 × g33 of 26.71 pm2/N is obtained with an optimal composition of x = 0.02. Moreover, a superior output voltage of 28.4Vp and power density of 15.93 μW/mm3 are simultaneously obtained for the sample applied in the PEH system. The sizes of the polar nanodomains of the samples are estimated using a phenomenological statistical model, and the domain configuration is observed using PFM. Our results indicate that composition modulation in PLZT can regulate and awaken ferroelectric domains, giving rise to an ultrahigh d33 × g33, which consequently results in enhanced performance of the output voltage and power density of PEHs.
研究领域:
材料科学
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压电能量收集
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陶瓷
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功能材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）