Ultrahigh Piezoelectric Response Obtained by Artificially Generating a Large Internal Bias Field in BiFeO<sub>3</sub>–BaTiO<sub>3</sub> Lead‐Free Ceramics

Lin, Jiamin; Lv, Fu; Hong, Zijian; Liu, Bing; Wu, Yongjun; Huang, Yuhui

doi:10.1002/adfm.202313879

Cited by 5 publications

(2 citation statements)

References 58 publications

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“…When x = 0.04, the bipolar strain of BT-BY ceramics reaches its maximum value of 0.192%, which is higher than the results reported in previous studies [18,46]. When x = 0.06, an internal bias field caused an asymmetric S-E hysteresis curve, and the internal bias field originates from the free charges that compensate for the depolarization field [47]. Subsequently, the bipolar strain decreases, and reaches its minimum value of 0.047% for x = 0.12 (figure 8 As can be seen from the above discussion, when x = 0.04, the ferroelectric and ergodic relaxor phases coexist.…”

Section: Resultsmentioning

confidence: 56%

Structural phase transition, relaxor behavior, and ultra-low strain hysteresis in BaTiO₃ ceramics modified by BiYO₃

Ma,

Liang,

Liu

et al. 2024

Smart Mater. Struct.

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In this study, the structural properties, phase transition, relaxor behavior, and strain properties of (1−x)BaTiO3‒xBiYO3 (x = 0.02‒0.15 mol) ceramics were investigated. The room temperature X-ray diffraction and Raman spectroscopy results reveal that (1−x)BaTiO3‒xBiYO3 ceramics undergo phase transition from tetragonal to pseudo-cubic structure with x increasing. The curves of dielectric constant and loss tangent as a function of temperature and frequency show that the dielectric constant was changing from being dependent on temperature to being independent of it upon increasing BiYO3 amount, which is induced obvious dielectric relaxation behavior. Slimmer polarization–electric field (P–E) loops and lower remnant polarization (Pr) were observed for samples with x ≥ 0.08. The transition between the ferroelectric and relaxor states leads to the narrow strain–electric field (S–E) loops, which exhibit a high electric field-induced strain of 0.192% and an ultra-low strain hysteresis of 10.4% at an electric field of 70 kV/cm for x = 0.04. This excellent performance indicates that 0.96BaTiO3‒0.04BiYO3 ceramics may be promising lead-free material for high-precision displacement actuators applications.

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Section: Resultsmentioning

confidence: 56%

Structural phase transition, relaxor behavior, and ultra-low strain hysteresis in BaTiO₃ ceramics modified by BiYO₃

Ma,

Liang,

Liu

et al. 2024

Smart Mater. Struct.

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“…(b) 10% Bi excess (0.68- x )BFO– x BSO–0.32PTO films with different BSO additions. (c) Piezoelectricity and T c of various systems, including BFO-based films, ,, KNN-based films, − and BNT-based films. − (d) Piezoelectricity and T c of BFO-based films and ceramics. ,− …”

Section: Resultsmentioning

confidence: 99%

Collaborative Optimization of Curie Temperature and Piezoelectricity in Ternary BiFeO₃–BiScO₃–PbTiO₃

Tang,

Liu,

Gao

et al. 2024

ACS Appl. Mater. Interfaces

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The enhancement of piezoelectricity without compromising the Curie temperature of a piezoelectric is challenging due to phenomenological incompatibility. In the present work, the phase diagram of (0.68-x)BiFeO 3 − xBiScO 3 −0.32PbTiO 3 , with varied addition of BiScO 3 (x = 0, 0.05, 0.10, 0.15, and 0.20), was constructed through systematic studies of the dielectric, ferroelectric, and piezoelectric properties. A rhombohedral−tetragonal phase boundary was observed near x = 0.10 BiScO 3 addition, of which the piezoelectricity was found to be seven times larger than that without BiScO 3 (∼208 pm/V vs ∼38 pm/V). Most importantly, a high Curie temperature of 430 °C is successfully inherited from binary 0.68BiFeO 3 −0.32PbTiO 3 . This is explained by optimized Bi compensation, which is observed critical regulating Curie temperature in BFO-based binary and ternary systems. These results open up a paradigm for collaboratively optimizing the Curie temperature and piezoelectric response for a number of ferroelectrics and provide a promising BiFeO 3 −BiScO 3 −PbTiO 3 film with integrated prominent performance for potential applications at elevated temperatures.

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Kesterite‐Type Narrow Bandgap Piezoelectric Catalysts for Highly Efficient Piezocatalytic Fenton System

Zhang,

Wang,

Han

et al. 2024

Adv Funct Materials

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Piezocatalytic Fenton (PF) system emerges as a promising approach to wastewater treatment by leveraging piezocatalysis to enhance Fenton‐like reactions. However, conventional piezocatalysts encounter challenges because they often compromise catalytic properties in biased favor of superior piezoelectricity, resulting in sluggish catalytic kinetics. To tackle this trade‐off, here a novel class of kesterite‐type narrow bandgap piezoelectrics, Cu2XSnS4 (CXTS, X = Zn, Ni, Co), is developed for PF reactions, which exhibit a unique combination of physicochemical attributes favorable for catalysis such as narrow bandgap (1.2–1.5 eV), high free charge density (1 × 1018 cm−3), mobility, and redox activity while retaining excellent piezoelectricity (62–142 pm V−1). With the well‐balanced piezoelectric, semiconducting, and catalytic properties, CXTS‐based PF systems demonstrate outstanding performance for tetracycline degradation, delivering a notable reaction kinetics of 0.34 min−1 only with a minor H2O2 dosage (1.2 mm), outperforming most of the conventional Fenton‐like reactions requiring a large amount H2O2 dosage by a factor up to 10. Such a remarkable performance is fulfilled by the simultaneously effective H2O2 activation and in situ generation of reactive oxygen species from oxygen and water via piezocatalysis. Additionally, the distinctive hierarchical morphology consisting of 2D nanosheets enables easy crystal domain deformation to trigger the piezoelectric effect, thereby drastically reducing the mechanical energy input required to drive redox reactions. Rigorous testing has validated the viability and practical feasibility of this system. The study offers a new design strategy for highly efficient piezocatalysts in the PF systems, enabling a cost‐effective and sustainable water treatment approach.

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Ultrahigh Piezoelectric Response Obtained by Artificially Generating a Large Internal Bias Field in BiFeO₃–BaTiO₃ Lead‐Free Ceramics

Cited by 5 publications

References 58 publications

Structural phase transition, relaxor behavior, and ultra-low strain hysteresis in BaTiO₃ ceramics modified by BiYO₃

Structural phase transition, relaxor behavior, and ultra-low strain hysteresis in BaTiO₃ ceramics modified by BiYO₃

Collaborative Optimization of Curie Temperature and Piezoelectricity in Ternary BiFeO₃–BiScO₃–PbTiO₃

Kesterite‐Type Narrow Bandgap Piezoelectric Catalysts for Highly Efficient Piezocatalytic Fenton System

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Ultrahigh Piezoelectric Response Obtained by Artificially Generating a Large Internal Bias Field in BiFeO3–BaTiO3 Lead‐Free Ceramics

Cited by 5 publications

References 58 publications

Structural phase transition, relaxor behavior, and ultra-low strain hysteresis in BaTiO3 ceramics modified by BiYO3

Structural phase transition, relaxor behavior, and ultra-low strain hysteresis in BaTiO3 ceramics modified by BiYO3

Collaborative Optimization of Curie Temperature and Piezoelectricity in Ternary BiFeO3–BiScO3–PbTiO3

Kesterite‐Type Narrow Bandgap Piezoelectric Catalysts for Highly Efficient Piezocatalytic Fenton System

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Product

Resources

About

Ultrahigh Piezoelectric Response Obtained by Artificially Generating a Large Internal Bias Field in BiFeO₃–BaTiO₃ Lead‐Free Ceramics

Structural phase transition, relaxor behavior, and ultra-low strain hysteresis in BaTiO₃ ceramics modified by BiYO₃

Structural phase transition, relaxor behavior, and ultra-low strain hysteresis in BaTiO₃ ceramics modified by BiYO₃

Collaborative Optimization of Curie Temperature and Piezoelectricity in Ternary BiFeO₃–BiScO₃–PbTiO₃