Electric field-induced transformations in bismuth sodium titanate-based materials

Viola, Giuseppe; Tian, Ye; Yu, Chuying; Tan, Yongqiang; Kovaľ, Vladimír; Wei, Xiaoyong; Choy, Kwang‐Leong; Yan, Haixue

doi:10.1016/j.pmatsci.2021.100837

Cited by 54 publications

(19 citation statements)

References 316 publications

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“…Amongst Pb-free perovskites, silver niobate (AgNbO 3 ) shows a "peculiar" response to the application of an electric eld, that is different to that shown by antiferroelectric lead-based materials, such as PbZrO 3 . [11][12][13][14] It was reported that AgNbO 3 shows "ferroelectric-like" hysteresis loops under weak electric-elds, as shown in Fig. 2a; 14,15 meanwhile, it displays classic "double" hysteresis (similar to PbZrO 3 ) at larger electric elds, as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Silver niobate perovskites: structure, properties and multifunctional applications

et al. 2022

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Section: Introductionmentioning

confidence: 99%

Silver niobate perovskites: structure, properties and multifunctional applications

et al. 2022

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“…Na 0.5 Bi 0.5 TiO 3 (NBT) is a typical lead-free ferroelectric ceramic with a high dielectric constant and a strong saturation polarization value (∼40 μC cm –2 ). − In our previous works, the NBT nanofibers with high aspect ratio were synthesized by the hydrothermal method and dispersed in the P(VDF-HFP) polymer matrix, resulting in an improved energy storage density from 3.15 J/cm 3 of NBT particles to 12.7 J/cm 3 of NBT nanofibers. However, the energy efficiency of NBT nanocomposites is relatively low due to a large leakage current of NBT itself .…”

Section: Introductionmentioning

confidence: 99%

Improved Energy Density and Energy Efficiency of Poly(vinylidene difluoride) Nanocomposite Dielectrics Using 0.93Na_0.5Bi_0.5TiO₃-0.07BaTiO₃ Nanofibers

Liu

Luo

Zhai

et al. 2022

ACS Appl. Mater. Interfaces

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In modern electronic and power systems, it is essential to develop advanced dielectric materials with high energy density. One-dimensional ferroelectric ceramic nanofibers were proved to be a feasible strategy for improving the permittivity and energy density of nanocomposites. In this paper, to overcome the high loss issue of Na0.5Bi0.5TiO3 (NBT), a kind of novel nanofibers 0.93Na0.5Bi0.5TiO3-0.07BaTiO3 (NBT-BT) with large aspect ratio are synthesized by the electrospinning method and used as the dielectric fillers in trilayer structured poly(vinylidene difluoride) (PVDF) nanocomposites for energy storage applications. The finite element analysis is performed to evaluate the electric field distribution in the nanocomposites. The results showed that the trilayer structured nanocomposite loaded with 6 wt % NBT-BT nanofibers in the middle layer achieved the highest discharge energy density of 19.21 J cm–3 at 527 kV mm–1, which is 87.2% higher than that of pure PVDF (10.26 J cm–3 at 420 kV mm–1). Owing to the contribution of the barrier effect and interface polarization between adjacent layers, the energy density of the trilayer structured nanocomposites is significantly higher than that of the single-layer nanocomposites. This work provides a kind of novel one-dimensional ceramic fillers for obviously improving the energy density of polymer-based dielectrics.

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“…The superior performance with high strain value/low hysteresis for the x = 0.20 composition shows a strong prospect for high-precision actuator applications. Although the electrostrain value in BNT-based ceramics is quite large (0.3–0.4%), the huge hysteresis (≥50%) seriously retards their further explorations and applications. ,− To reveal the underlying mechanism behind this fascinating performance, multiscale characterization is exploited to establish structure–performance relationships.…”

Section: Resultsmentioning

confidence: 99%

Polarity Modulation Induced High Electrostrain Performance with Near-Zero Hysteresis in a (Sr_0.7Bi_0.2□0.1)TiO₃-Based System

Hong

et al. 2022

ACS Appl. Mater. Interfaces

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High-precision piezo actuators necessitate dielectrics with high electrostrain performance with low hysteresis. Polarity-modulated (Sr 0.7 Bi 0.2□0.1 )-TiO 3 -based ceramics exhibit extraordinarily discrete multiphase coexistence regions: (i) the relaxor phase coexistence (RPC) region with local weakly polar tetragonal (T) and pseudocubic (Pc) short-range polar nanodomains and (ii) the ferroelectric phase coexistence (FPC) region with T long-range domains and Pc nanodomains. The RPC composition features a specially high and pure electrostrain performance with nearzero hysteresis (S ∼ 0.185%, Q 33 ∼ 0.038 m 4 •C −2 ), which is double those of conventional Pb(Mg 1/3 Nb 2/3 )O 3 -based ceramics. Particular interest is paid to the RPC and FPC with multiscale characterization to unravel local structure−performance relationships. Guided by piezoelectric force microscopy, scanning transmission electron microscopy, and phase-field simulations, the RPC composition with multiphase low-angle weakly polar nanodomains shows local structural heterogeneity and contributes to a flat local free energy profile and thus to nanodomain switching and superior electrostrain performance, in contrast to the FPC composition with a macroscopic domain that shows stark hysteresis. This work provides a paradigm to design high-precision actuator materials with large electrostrain and ultralow hysteresis, extending our knowledge of multiphase coexistence species in ferroelectrics.

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Electric field-induced transformations in bismuth sodium titanate-based materials

Cited by 54 publications

References 316 publications

Silver niobate perovskites: structure, properties and multifunctional applications

Silver niobate perovskites: structure, properties and multifunctional applications

Improved Energy Density and Energy Efficiency of Poly(vinylidene difluoride) Nanocomposite Dielectrics Using 0.93Na_0.5Bi_0.5TiO₃-0.07BaTiO₃ Nanofibers

Polarity Modulation Induced High Electrostrain Performance with Near-Zero Hysteresis in a (Sr_0.7Bi_0.2□0.1)TiO₃-Based System

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Electric field-induced transformations in bismuth sodium titanate-based materials

Cited by 54 publications

References 316 publications

Silver niobate perovskites: structure, properties and multifunctional applications

Silver niobate perovskites: structure, properties and multifunctional applications

Improved Energy Density and Energy Efficiency of Poly(vinylidene difluoride) Nanocomposite Dielectrics Using 0.93Na0.5Bi0.5TiO3-0.07BaTiO3 Nanofibers

Polarity Modulation Induced High Electrostrain Performance with Near-Zero Hysteresis in a (Sr0.7Bi0.2□0.1)TiO3-Based System

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Improved Energy Density and Energy Efficiency of Poly(vinylidene difluoride) Nanocomposite Dielectrics Using 0.93Na_0.5Bi_0.5TiO₃-0.07BaTiO₃ Nanofibers

Polarity Modulation Induced High Electrostrain Performance with Near-Zero Hysteresis in a (Sr_0.7Bi_0.2□0.1)TiO₃-Based System