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Showing papers on "Ferroelectric ceramics published in 2022"


Journal ArticleDOI
TL;DR: In this article, a design strategy is proposed to optimize the energy storage characteristics and transparency of ceramics by introducing nanodomains, increasing the band gap energy and reducing the grain size.

72 citations


Journal ArticleDOI
TL;DR: In this article, a novel strategy of enhancing the dielectric and energy storage properties of Na0.5Bi 0.5NbO3 (KNN) ferroelectric phase is proposed, and its underlying mechanism is elucidated.

21 citations


Journal ArticleDOI
TL;DR: In this paper , the synergistic contributions of high Pmax, small Pr and large Eb endow the BiFeO3-based ceramics with relaxor ferroelectric characteristics, due to which an ultrahigh Wrec of 13.9 J cm−3 and high η of 89.6% have been achieved synchronously.
Abstract: The synergistic contributions of high Pmax, small Pr and large Eb endow the BiFeO3-based ceramics with relaxor ferroelectric characteristics, due to which an ultrahigh Wrec of 13.9 J cm−3 and high η of 89.6% have been achieved synchronously.

20 citations


Journal ArticleDOI
TL;DR: In this article , a synergistic optimization strategy with regard to ferroelectric domain and band structure is applied to NaNbO 3 (NN)-based ceramics, achieving high W rec and η of 7.33 J cm −3 and 83.68% respectively.
Abstract: A synergistic optimization strategy with regard to ferroelectric domain and band structure is applied to NaNbO 3 (NN)-based ceramics. High W rec and η of 7.33 J cm −3 and 83.68% are achieved simultaneously.

20 citations


Journal ArticleDOI
TL;DR: In this paper , a novel strategy of enhancing the dielectric and energy storage properties of Na 0.5 NbO 3 (KNN) ferroelectric phase is proposed, and its underlying mechanism is elucidated.

18 citations


Journal ArticleDOI
TL;DR: In this paper, Ta5+ and Bi3+ ions were introduced into the A site and B site of the NaNbO3 matrix, yielding Na(1-3x)BixNb0.85Ta0.14) ceramics.

12 citations



Journal ArticleDOI
TL;DR: In this article , Ta 5+ and Bi 3+ ions were introduced into the A site and B site of the NaNbO 3 matrix, yielding Na (1-3 x ) Bi x Nb 0.85 Ta 0.15 O 3 (NBNT, x = 0.05, 0.08, 0., 11, 0, 14) ceramics, with values of 3.37 J/cm 3 and 89% respectively.

12 citations


Journal ArticleDOI
TL;DR: In this article , high-performance dielectric materials, the critical candidate of multilayer ceramic capacitors, are urgently needed for advanced energy storage or pulse power technologies and applications.
Abstract: High-performance dielectric materials, the critical candidate of multilayer ceramic capacitors, are urgently needed for advanced energy storage or pulse power technologies and applications. However, it is still challenging to simultaneously...

11 citations


Journal ArticleDOI
TL;DR: In this article , a single phase (Bi0.2Na 0.2Ba 0.3−xmol%PbO high-entropy relaxor ferroelectric ceramics are fabricated and investigated.
Abstract: ABO3‐type high‐entropy relaxor ferroelectric ceramics have rarely been studied in energy storage capacitor owing to easy formation of impurity phase. In this work, single phase (Bi0.2Na0.2Ba0.2Sr0.2Ca0.2)TiO3‐xmol%PbO high‐entropy ceramics are fabricated and investigated. The optimal composition of x = 2.0 shows a remarkable comprehensive energy storage performance with high recoverable energy density Wrec = 8.2 J cm–3, ultrahigh efficiency η = 92.2%, excellent temperature stability (Wrec = 4.4 J cm‐3 ± 4%, η = 91% ± 3% within the range of 25–120 °C), and ultrafast discharge rate t0.9 = 5.9 µs. Three key factors, low remnant polarization Pr originating from high‐entropy enhanced relaxation degree, high maximum polarization Pm due to special electronic structure of Pb ion, and high electrical breakdown strength Eb stemming from small grain size, are responsible for the improved energy storage properties. These results provide a novel strategy of developing high‐entropy ceramics to optimize electrical performances including energy storage property.

10 citations


Journal ArticleDOI
TL;DR: In this article , a large energy storage density and big electrocaloric strength in the BiFeO3-BaTiO3 system was demonstrated. But the performance of the system was limited.
Abstract: Large energy storage density and big electrocaloric strength in the BiFeO3–BaTiO3 system.

Journal ArticleDOI
TL;DR: In this article, the effects of BMS on the phase transition, microstructure, the dielectric properties and the energy storage properties of lead-free ferroelectric ceramics of (1-x)Ba0.98Li0.02TiO3-xBi(Mg1/2Sn 1/2)O3 were investigated.

Journal ArticleDOI
TL;DR: In this paper , a morphotropic phase boundary was introduced to obtain ferroelectricity in high-entropy perovskite oxides, and the feasibility of the concept was demonstrated using (1−x)Pb(Mg0.2Zn 0.2Nb0.3Nb 0.4Ta0.1Nb 1.2W0.

Journal ArticleDOI
TL;DR: In this paper , the history and recent progress of texture-engineered ferroelectric ceramics are reviewed, and more explorations on template-related issues, including orientation mismatch, physical models of the textured grain growth, and micromorphology-property relationship are discussed.
Abstract: Texture engineering offers an approach for achieving enhanced properties in bulk ceramics by introducing crystallographic anisotropy. Recent developments on texture engineering have enabled the fabrication of highly aligned ferroelectric ceramics with single-crystal-like electromechanical properties. In this paper, we review the history and recent progress of texture-engineered ferroelectric ceramics. We expect that more explorations on template-related issues, including orientation mismatch, physical models of the textured grain growth, and micromorphology–property relationship, will advance the development of texture-engineered ferroelectric ceramics with further improved properties.

Journal ArticleDOI
TL;DR: In this article, a transparent 0.75Pb(Mg1/3Nb2/3)O3-0.25PbTiO3:xPr3+ ceramics by oxygen atmosphere sintering together with hot pressing sinterings was presented.

Journal ArticleDOI
TL;DR: In this article , Er3+ and Pr3+ co-doped Na0.5+xNb2O9 (x = −0.02, 0, 0.02) ferroelectric ceramics with excellent photochromic (PC) and luminescence modulation properties were successfully prepared.
Abstract: Photochromic (PC) materials can be widely applied in light‐driven devices such as optical antifake labels, optical switches, information storage. Herein, Er3+ and Pr3+ co‐doped Na0.5+xBi2.5+xNb2O9 (x = −0.02, 0, 0.02) ferroelectric ceramics with excellent PC and luminescence modulation properties have been successfully prepared. Both chemical and physical strategies, namely excess Na+ and Bi3+ content during weighing of raw materials and an electric field poling, have been developed to enhance the PC and luminescence modulation. The largest reflectance difference ΔRef between fresh and irradiated ceramics reaches a high value of 36% at x = 0.02, which is much higher than the usually obtained value in inorganic oxide ferroelectrics. Additionally, this value increases to 39% after an electric field poling. Accordingly, the up‐conversion luminescence modulation ΔRt reaches a high value of 91.6%. The mechanisms of enhanced PC reaction and luminescence modulation via an electrical poling are discussed. Furthermore, a fast response time of around 1 s for PC reaction is achieved in this material. Utilizing this advantage, a hand‐rewritable display using the prepared ceramics has been achieved besides the applications in anti‐counterfeiting.



Journal ArticleDOI
TL;DR: In this paper , a synergistic effect of microstructures based on Sm3+ doping was proposed to decrease the grain size and tune the domain structure, leading to the increase of breakdown strength and the enhancement of relaxation characteristics.

Journal ArticleDOI
Hongrui Jia1, Zhigang Liang1, Zhen Li1, Fei Li1, Linghang Wang1 
TL;DR: In this paper, a large electric-field induced strain of 0.39% at 7 kV/mm and a ultralow hysteresis of 1.94% were achieved in textured ceramics with texture degree 90.

Journal ArticleDOI
TL;DR: In this paper , the authors proposed a grain size engineering method to realize high electric breakdown strength and enhance the recoverable energy density of lead-free ceramics by adding the SnO2 additive to drive the grain size smaller and improve the energy storage performance.

Journal ArticleDOI
TL;DR: In this article , a large electric-field induced strain of 0.39% at 7 kV/mm and a ultralow hysteresis of 1.94% were achieved in textured ceramics with texture degree 90.

Journal ArticleDOI
TL;DR: A high entropy relaxor ferroelectric ceramic (NBCSBT) was successfully synthesized by using the solid-state technique in this article , and the energy storage properties, under different frequencies and temperatures, have been investigated in detail.

Journal ArticleDOI
TL;DR: In this paper , high-energy milling was used for the mechanosynthesis of nanocrystalline Ba0.85Ca0.15Zr0.1Ti0.9O3 powders with enhanced reactivity and to control grain growth during ceramic processing to obtain materials with tailored microstructures and decreasing grain sizes down to the sub-10 µm range.
Abstract: Lead-free ferroelectric Ba0.85Ca0.15Zr0.1Ti0.9O3 stands out among environmentally friendly alternatives to commercial Pb(Zr,Ti)O3 piezoceramics for its large piezoelectric coefficients, and it is especially suitable for applications in which thermal depoling is not an issue like bio-implanted devices. However, ceramic processing by conventional means consistently results in exaggerated grain growth, which compromises reliability and has prevented its transfer to industry. We report here the application of high-energy milling for the mechanosynthesis of nanocrystalline Ba0.85Ca0.15Zr0.1Ti0.9O3 powders with enhanced reactivity, and to the control of grain growth during ceramic processing to obtain materials with tailored microstructures and decreasing grain sizes down to the sub-10 µm range. Characterization of the electrical and electromechanical properties was accomplished and uncovered triggering of a new mechanism for very large strain under electric field in fine-grained ceramics. Process optimization by precursor selection and preliminary up-scaling studies are also presented.

Journal ArticleDOI
TL;DR: In this article , a pre-poled Na 0.4 K 0.1 Bi 0.5 TiO 3 (NKBT) solid solution was synthesized by the conventional solid-state route and X-ray diffraction pattern was refined by the Rietveld technique to determine the structural phases (Rhombohedral and Tetragonal) present in the solid solution.

Journal ArticleDOI
TL;DR: In this paper , the authors constructed the special domain configuration in the pseudocomposite ceramics of (1 - x)0.55BF-0.4BT- 0.05BZN/x(0.17%) by a two-step method and showed that the two-phase composite can induce the formation of grain dependent domain at nanoscale.
Abstract: Bismuth ferrite-barium titanate (BF-BT) based ceramics have attracted extensive attention due to its excellent energy conversion. Recently it has been found that BF-BT based ceramics with large electrostrain are usually accompanied by a special domain configuration in which weak and strong piezoresponse domain grains coexist. In this work, we purposefully constructed the special domain configuration in the pseudocomposite ceramics of (1 - x)0.55BF-0.4BT-0.05BZN/x(0.7BF-0.3BT) (relaxor-like phase/ferroelectric phase, RE/FE) by a "two-step" method. Macroproperty characterization suggests that the critical component pseudocomposite ceramic (x = 50%) with the special domain structure can exhibit a maximum electrostrain value (S ∼ 0.28%) at 6 kV/mm, almost 3-fold to that (S ∼ 0.1%) of the two end members and 63% higher than that (S ∼ 0.17%) of the same component ceramic prepared by the "one-step" method. Further mesoscopic structure results show that the "two-phase" composite can induce the formation of grain dependent domain at nanoscale, and just this special domain conformation is conducive to a significant improvement in electrostrain. Therefore, the large strain in BF-BT-based ceramics is mainly caused by the special microstructure rather than component.

Journal ArticleDOI
TL;DR: In this paper , the authors present the critical challenges regarding the collaborative design of dielectric ceramic capacitors in next-generation advanced pulse power systems owing to their ultrafast charging/discharging rate and high power density.
Abstract: Dielectric ceramic capacitors are essential components in next-generation advanced pulse power systems owing to their ultrafast charging/discharging rate and high power density, nevertheless confronting the critical challenges regarding the collaborative...



Journal ArticleDOI
TL;DR: In this paper , the authors demonstrate the shape memory behavior of ferroelectric ceramics through a case study on Na0.5Bi 0.5TiO3-BaTiOO3 (NBT-BT) and show that after heat treatment under stress, there was a large residual strain left in the NBT and after they were annealed at a temperature above the phase-transition temperature, the residual strain recovered.