Enhanced resistance in Bi(Fe1-Sc )O3-0.3BaTiO3 lead-free piezoelectric ceramics: Facile analysis and reduction of oxygen vacancy

Xun, Bo-Wei; Tang, Yu-Cheng; Chen, Jianyin; Zhang, Bo‐Ping

doi:10.1016/j.jeurceramsoc.2019.06.015

Cited by 34 publications

(19 citation statements)

References 41 publications

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“…The presence of the Bi 2 Fe 4 O 9 phase is ascribed to a deviation from stoichiometry because a large portion of low-melting BF in the samples decreased the sintering temperature, which promoted significant Bi 2 O 3 volatilization during high-temperature sintering . The defect equation of the Bi 2 O 3 volatilization in BF can be expressed as …”

Section: Results and Discussionmentioning

confidence: 99%

Lead-Free BiFeO₃-BaTiO₃ Ceramics with High Curie Temperature: Fine Compositional Tuning across the Phase Boundary for High Piezoelectric Charge and Strain Coefficients

Xun

Song

et al. 2021

ACS Appl. Mater. Interfaces

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119

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BiFeO3-BaTiO3 is a promising high-temperature piezoelectric ceramic that possesses both good electromechanical properties and a Curie temperature (T C). Here, the piezoelectric charge constants (d 33) and strain coefficients (d*33) of (1 – x)BiFeO3-xBaTiO3 (BF-xBT; 0.20 ≤ x ≤ 0.50) lead-free piezoelectrics were investigated at room temperature. The results showed a maximum d 33 of 225 pC/N in the BF-0.30BT ceramic and a maximum d*33 of 405 pm/V in the BF-0.35BT ceramic, with T Cs of 503 and 415 °C, respectively. To better understand the performance enhancement mechanisms, a phase diagram was established using the results of XRD, piezoresponse force microscopy, TEM, and electrical property measurements. The superb d 33 of the BF-0.30BT ceramic arose because of its location in the optimum point in the morphotropic phase boundary, low oxygen vacancy (V O ··) concentration, and domain heterogeneity. The superior d*33 of the BF-0.35BT ceramic was attributed to a weak relaxor behavior between coexisting macrodomains and polar nanoregions. The presented strategy provides guidelines for designing high-temperature BF-BT ceramics for different applications.

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Section: Results and Discussionmentioning

confidence: 99%

Lead-Free BiFeO₃-BaTiO₃ Ceramics with High Curie Temperature: Fine Compositional Tuning across the Phase Boundary for High Piezoelectric Charge and Strain Coefficients

Xun

Song

et al. 2021

ACS Appl. Mater. Interfaces

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119

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“…It is well known that the Bi 3+ volatilization and the valence change of Fe 3+ →Fe 2+ usually happened in BF ceramics, both of them could generate O V  corresponding to the O1 V  and O2 V  respectively, causing a high J, as shown in eqs. 4-5 [33][34][35].…”

Section: Methodsmentioning

confidence: 99%

High Curie Temperature BiFeO3-BaTiO3 Lead-free Piezoelectric Ceramics: Ga3+ Doping and Enhanced Insulation Properties

Peng

Tang

Zhang

et al. 2020

Preprint

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BiFeO3-BaTiO3 (BF-BT) is a promising high temperature lead-free piezoceramics due to their excellent piezoelectric properties with high Curie temperature (TC>500 °C). While the high leakage current density severely restricted its application. In this work, the leakage mechanism relative to the dielectric properties and piezoelectric properties were systematically studied with a special emphasis on gallium (Ga3+) adding effect in 0.7BiFe(1-x)GaxO3-0.3BaTiO3 (BFGax-BT, 0≤x≤0.10) ceramics. A high resistivity (ρ) of 2.73×1012 Ω·cm-1 and low leakage current (J) of 7.78×10-9 A·cm-2 were achieved at x=0.06, which attributes to the low oxygen vacancies (B). The J-E curves reveal different type of conduction process in BFGax-BT ceramics, including Ohmic conduction, space-charge-limited conduction (SCLC) mechanism and interface-limited Schottky emission. The BFGa0.06-BT ceramic exhibits excellent piezoelectric performance: d33=174 pC·N-1, TC=497 °C, kp=29 %.

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“…Zhang et al reported on BF-based piezoelectric ceramics with high-piezoelectric performance (165 pC/N) and high Curie temperature (505 °C). 6 However, their piezoelectric activity is generally low, which limits the use of BF-based piezoelectric ceramics. In contrast, KNN-based ceramics have the best comprehensive properties.…”

Section: Introductionmentioning

confidence: 99%

High Piezoelectricity in Eco-Friendly NaNbO₃-Based Ferroelectric Relaxor Ceramics via Phase and Domain Engineering

Cao

Lin

Shi

et al. 2023

ACS Appl. Mater. Interfaces

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To meet the requirements of environmental friendliness, high-performance lead-free piezoelectric materials have become important materials for next-generation electronic devices. Here, lead-free and potassium-free NaNbO3 (NN)-based ceramics with high piezoelectric (d 33 = 361 ± 10 pC/N) and dielectric (εr = 4500) properties were obtained by tolerant preparation techniques. The excellent piezoelectric and dielectric properties can be attributed to the relaxor morphotropic phase boundaries (R–MPB) and coexisting domain regions, which are beneficial in lowering the free energy and greatly improving the dielectric response and domain switching capability. Furthermore, the d 33 of NaNbO3-10Ba(Ti0.7Sn0.3)O3-1.5NaSbO3 (NN-10BTS-1.5NS) ceramics can be maintained at 350 pC/N over the range of 25–80 °C with a change rate of less than 10%, exhibiting excellent temperature stability. Based on a series of in situ characterizations, the variations of the phase and domain structures of NN-based relaxor piezoelectric ceramics with temperature are clearly demonstrated. This work not only proposes new materials for sensors and actuators but also provides an excellent strategy for designing high-performance piezoelectric ceramics through phase and domain engineering.

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Enhanced resistance in Bi(Fe1-Sc )O3-0.3BaTiO3 lead-free piezoelectric ceramics: Facile analysis and reduction of oxygen vacancy

Cited by 34 publications

References 41 publications

Lead-Free BiFeO₃-BaTiO₃ Ceramics with High Curie Temperature: Fine Compositional Tuning across the Phase Boundary for High Piezoelectric Charge and Strain Coefficients

Lead-Free BiFeO₃-BaTiO₃ Ceramics with High Curie Temperature: Fine Compositional Tuning across the Phase Boundary for High Piezoelectric Charge and Strain Coefficients

High Curie Temperature BiFeO3-BaTiO3 Lead-free Piezoelectric Ceramics: Ga3+ Doping and Enhanced Insulation Properties

High Piezoelectricity in Eco-Friendly NaNbO₃-Based Ferroelectric Relaxor Ceramics via Phase and Domain Engineering

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Enhanced resistance in Bi(Fe1-Sc )O3-0.3BaTiO3 lead-free piezoelectric ceramics: Facile analysis and reduction of oxygen vacancy

Cited by 34 publications

References 41 publications

Lead-Free BiFeO3-BaTiO3 Ceramics with High Curie Temperature: Fine Compositional Tuning across the Phase Boundary for High Piezoelectric Charge and Strain Coefficients

Lead-Free BiFeO3-BaTiO3 Ceramics with High Curie Temperature: Fine Compositional Tuning across the Phase Boundary for High Piezoelectric Charge and Strain Coefficients

High Curie Temperature BiFeO3-BaTiO3&nbsp;Lead-free Piezoelectric Ceramics: Ga3+ Doping and Enhanced Insulation Properties

High Piezoelectricity in Eco-Friendly NaNbO3-Based Ferroelectric Relaxor Ceramics via Phase and Domain Engineering

Contact Info

Product

Resources

About

Lead-Free BiFeO₃-BaTiO₃ Ceramics with High Curie Temperature: Fine Compositional Tuning across the Phase Boundary for High Piezoelectric Charge and Strain Coefficients

Lead-Free BiFeO₃-BaTiO₃ Ceramics with High Curie Temperature: Fine Compositional Tuning across the Phase Boundary for High Piezoelectric Charge and Strain Coefficients

High Curie Temperature BiFeO3-BaTiO3 Lead-free Piezoelectric Ceramics: Ga3+ Doping and Enhanced Insulation Properties

High Piezoelectricity in Eco-Friendly NaNbO₃-Based Ferroelectric Relaxor Ceramics via Phase and Domain Engineering