Piezoelectric grain-size effects of BaTiO3 ceramics under different sintering atmospheres

Dai, Bowen; Hu, Xiaoping; Yin, R.Q.; Bai, Wangfeng; Wen, Fei; Deng, Jiang; Liang, Zheng; Du, Juan; Zheng, Peng; Qin, Huibin

doi:10.1007/s10854-017-6494-5

Cited by 19 publications

(9 citation statements)

References 32 publications

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“…a) Domain width dependence of BaTiO 3 ‐based ceramics with different grain sizes (GS). [ 126,140,146,152,159,160 ] b) Effect of average grain size on the d* 33 of Ba(Ti 0.96 Sn 0.04 )O 3 ceramics. Reproduced with permission.…”

Section: Strategies For Improving Piezoelectric Responsementioning

confidence: 99%

“…Solid-state techniques (i.e., SSCG) exclude the use of Pt crucible and solvent, and the crystals show higher chemical homogeneity compared to melt growth techniques. [126,140,146,152,159,160] b) Effect of average grain size on the d* 33 of Ba(Ti 0.96 Sn 0.04 )O 3 ceramics. Reproduced with permission.…”

Section: Grain-free Single Crystalsmentioning

confidence: 99%

“…Grain size dependence of domain size and domain wall motion. a) Domain width dependence of BaTiO 3 -based ceramics with different grain sizes (GS) [126,140,146,152,159,160]. b) Effect of average grain size on the d* 33 of Ba(Ti 0.96 Sn 0.04 )O 3 ceramics.…”

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confidence: 99%

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Evolution from Lead‐Based to Lead‐Free Piezoelectrics: Engineering of Lattices, Domains, Boundaries, and Defects Leading to Giant Response

Waqar

Chen

et al. 2021

Advanced Materials

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for piezoelectric devices was estimated to be worth $25.1 billion with a projected compounded annual growth rate (CAGR) of 6.2%. [6] However, the development of piezoelectrics took more than a century to evolve from quartz, which is among the first known piezoelectric materials, [7,8] to their current forms in the modern era. The evolution of piezoelectrics is, hence, rich with the exciting discoveries in fundamental physics, paving the way to the development of applications that changed the course of history. One such example is the invention of sonar by Paul Langevin and team in 1917 [9] which is still essentially implemented today for underwater acoustics and navigation. Later, the discovery of ferroelectricity in BaTiO 3 polycrystal in 1946 [10,11] and phase transition (now referred to as a morphotropic phase boundary (MPB)) in PbZrO 3 -PbTiO 3 solid solution in 1954 [12] stimulated a worldwide interest in gaining fundamental understanding of electromechanical coupling in ferroelectric materials to develop better and more reliable piezoelectric devices. [13][14][15] By contrast, the research on piezoelectrics in the past two decades has been driven mainly by the environmental and health concerns related to the toxicity of lead, which is a primary constituent of the widely used lead-based piezoelectric ceramics, [16,17] where the best known example is lead zirconium titanates (PZT). Consequently, the stringent regulations all over the world to restrict the use of lead [18] have resulted in the rise of "lead-free" ceramics which further gained popularity after Saito et al.'s discovery of large piezoelectric response in a lead-free piezoceramic. [19] These eco-friendly materials represent now although a relatively small part of the current piezoelectrics market, with a total estimate of around $172 million, but, their sales are projected to reach $443 million by 2024 with a CAGR of 20.8%. [6] ABO 3 -type perovskite oxide ferroelectrics hold great technical value owing to their large spontaneous polarization, which makes them highly suitable for piezoelectric applications. [1,3,20] In recent years, the research efforts have been primarily focused on developing new strategies to produce high-performance lead-free oxide piezoelectrics with properties at least comparable to or surpassing those of the lead-based counterparts, such as PZT. [20] These strategies have mainly Piezoelectric materials are known to mankind for more than a century, with numerous advancements made in both scientific understandings and practical applications. In the last two decades, in particular, the research on piezoelectrics has largely been driven by the constantly changing technological demand, and the drive toward a sustainable society. Hence, environmental-friendly "lead-free piezoelectrics" have emerged in the anticipation of replacing lead-based counterparts with at least comparable performance. However, there are still obstacles to be overcome for realizing this objective, while the efforts in this direction already seem to culminat...

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Section: Strategies For Improving Piezoelectric Responsementioning

confidence: 99%

Section: Grain-free Single Crystalsmentioning

confidence: 99%

See 1 more Smart Citation

Evolution from Lead‐Based to Lead‐Free Piezoelectrics: Engineering of Lattices, Domains, Boundaries, and Defects Leading to Giant Response

Waqar

Chen

et al. 2021

Advanced Materials

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“…Under the oxygen atmosphere, oxidation reactions dominate and oxygen vacancies are more difficult to produce. 42 In stage E, the increase in sample weight is more pronounced than in the previous samples from TG. This means that the oxidation reaction proceeds more completely.…”

Section: ■ Results and Discussionmentioning

confidence: 87%

Modulating Oxygen Vacancies in BaSnO₃ for Printable Carbon-Based Mesoscopic Perovskite Solar Cells

Liu

Guan

Liu

et al. 2021

ACS Appl. Energy Mater.

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The mesoscopic electron transport layer (m-ETL) has been demonstrated to help perovskite solar cells (PSCs) construct a tough interface against stress and a good contact for efficient extraction of photogenerated electrons. The barium stannate BaSnO 3 (BSO) has exhibited great potential to be applied as PSCs' m-ETL. However, it lacks wide applications. Here, we report the synthesis of BSO nanoparticles with modulated crystallinity and oxygen vacancy distribution by controlling the heat treatment atmosphere during the synthesizing process via the co-precipitation method and demonstrate their applications as the m-ETL for printable hole-conductor-free carbon-based mesoscopic PSCs (p-MPSCs). We find that heat treatment under nitrogen greatly improves the crystallinity of BSO particles and brings oxygen vacancies, while annealing under oxygen leads to poor crystallinity but effectively eliminates the oxygen vacancies in BSO particles. The BSO particles are first heated in nitrogen to obtain better crystallization and dispersion and then cooled down in oxygen to reduce the surface defects. This heat treatment method could boost the power conversion efficiency (PCE) of p-MPSCs with the BSO m-ETL to 14.77%. However, the PCE values of devices based on BSO synthesized under nitrogen or oxygen alone are 11.94 and 6.86%, respectively.

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“…The decreased grain size of (1-x)NN-xBST ceramics could be attributed to the random distribution of metallic cations (Ba 2þ and Sr 2þ ) at A-sites, which destroys the internal structure and inhibits the grain growth. [50,51] The smaller grain size is generally connected to a higher voltagewithstand capability and a lower leakage current, [45] which is beneficial to the optimization of the energy storage ability. Breakdown strength could be estimated by the Weibull distributions with the following equation…”

Section: Resultsmentioning

confidence: 99%

High Capacitive Performance Achieved in NaNbO₃‐Based Ceramics via Grain Refinement and Relaxation Enhancement

Xiao

et al. 2021

Energy Tech

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Lead‐free antiferroelectric (AFE) energy storage material NaNbO3 has received increasing attention because of the advantages of low density, low cost, and environmental friendliness. Nevertheless, square P–E hysteresis loops and low electric breakdown strength suppress the realistic energy storage applications of the pristine NaNbO3 ceramic. Herein, the Ba0.6Sr0.4TiO3 relaxor ferroelectric is introduced into the NaNbO3 AFE ceramic, aiming to enhance energy storage performances. (1–x)NaNbO3–xBa0.6Sr0.4TiO3 ceramics with different doping levels are manufactured via the conventional solid‐state processing route. A remarkable recoverable energy storage density (W rec ≈ 3.04 J cm−3) and a high efficiency (η ≈ 88.83%) are achieved synchronously in the ceramic with x = 0.20, under an applied electric field of 320 kV cm−1, benefiting from the enhanced relaxor behavior and reduced grain size caused by the introduction of Ba0.6Sr0.4TiO3. Furthermore, excellent frequency stability (5–1000 Hz) and temperature stability (20–150 °C) along with outstanding fatigue resistance (up to 2 × 105cycles) are also achieved. Moreover, the ceramic displays outstanding charge–discharge capabilities such as big current density (C D ≈ 1096.23 A cm−2), high power density (P D ≈ 106.7 MV cm−3) and fast discharge speed (t 0.9 ≈ 142 ns). These results demonstrate that the Ba0.6Sr0.4TiO3 modified NaNbO3‐based ceramics could be competitive candidates for high power systems.

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Piezoelectric grain-size effects of BaTiO3 ceramics under different sintering atmospheres

Cited by 19 publications

References 32 publications

Evolution from Lead‐Based to Lead‐Free Piezoelectrics: Engineering of Lattices, Domains, Boundaries, and Defects Leading to Giant Response

Evolution from Lead‐Based to Lead‐Free Piezoelectrics: Engineering of Lattices, Domains, Boundaries, and Defects Leading to Giant Response

Modulating Oxygen Vacancies in BaSnO₃ for Printable Carbon-Based Mesoscopic Perovskite Solar Cells

High Capacitive Performance Achieved in NaNbO₃‐Based Ceramics via Grain Refinement and Relaxation Enhancement

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Piezoelectric grain-size effects of BaTiO3 ceramics under different sintering atmospheres

Cited by 19 publications

References 32 publications

Evolution from Lead‐Based to Lead‐Free Piezoelectrics: Engineering of Lattices, Domains, Boundaries, and Defects Leading to Giant Response

Evolution from Lead‐Based to Lead‐Free Piezoelectrics: Engineering of Lattices, Domains, Boundaries, and Defects Leading to Giant Response

Modulating Oxygen Vacancies in BaSnO3 for Printable Carbon-Based Mesoscopic Perovskite Solar Cells

High Capacitive Performance Achieved in NaNbO3‐Based Ceramics via Grain Refinement and Relaxation Enhancement

Contact Info

Product

Resources

About

Modulating Oxygen Vacancies in BaSnO₃ for Printable Carbon-Based Mesoscopic Perovskite Solar Cells

High Capacitive Performance Achieved in NaNbO₃‐Based Ceramics via Grain Refinement and Relaxation Enhancement